Gr 10 Physical Sciences Ch 13: Resistance

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What is the primary cause of resistance in a conductor?

Collisions between electrons and atoms (correct)

The flow of electric charge

The thickness of the conductor's insulation

The shape of the conductor

What is the unit of measurement for resistance?

Watt

Ampere

Ohm (correct)

Volt

What happens to the resistance of a conductor when its length is doubled?

It doubles (correct)

It decreases by half

It remains the same

It quadruples

Why do light bulbs have high resistance?

Due to their thin filaments Signup and view all the answers

What happens to the resistance of a conductor when its cross-sectional area is doubled?

It halves Signup and view all the answers

What is the term for the opposition to the flow of electric charge in a circuit?

Resistance Signup and view all the answers

Why do wires have lower resistance than light bulbs?

Due to their larger cross-sectional area Signup and view all the answers

What is the relationship between the material of a conductor and its resistance?

Different materials have different intrinsic resistivities Signup and view all the answers

What determines the resistance of a material?

Its length and cross-sectional area Signup and view all the answers

What is the total resistance of resistors connected in series?

The sum of the individual resistances Signup and view all the answers

What is the purpose of a resistor in a circuit?

To control the current flow and voltage in the circuit Signup and view all the answers

Why do batteries go flat?

Because all their chemical potential energy is converted into other forms of energy Signup and view all the answers

What is the primary function of a voltmeter in a circuit?

To measure the potential difference (voltage) across two points in the circuit Signup and view all the answers

What is the characteristic of superconductors?

They have zero resistance at very low temperatures Signup and view all the answers

What is the purpose of a light bulb in a circuit?

To emit light when current flows through it Signup and view all the answers

What is the total resistance of resistors connected in parallel?

Less than the smallest individual resistance Signup and view all the answers

What is the purpose of a switch in a circuit?

To allow the circuit to be opened or closed Signup and view all the answers

Why do cellphone chargers get warm during use?

Because the resistors in the charger convert some of the electrical energy into heat Signup and view all the answers

What is the main reason why a cellphone charger gets warm during use?

The resistors in the charger convert some of the electrical energy into heat. Signup and view all the answers

What is the main difference between a series and parallel configuration of resistors?

The voltage across each resistor is the same in a parallel configuration. Signup and view all the answers

What is the purpose of a light bulb in a circuit?

To emit light when current flows through it. Signup and view all the answers

What is the primary function of an ammeter in a circuit?

To measure the current flowing through the circuit. Signup and view all the answers

What happens to the energy stored in a battery as it is used to drive a circuit?

It is converted into heat and light. Signup and view all the answers

What is the characteristic of a material that has no resistance at very low temperatures?

Superconductor Signup and view all the answers

What is the purpose of a switch in a circuit?

To allow the circuit to be opened or closed. Signup and view all the answers

What is the relationship between the length of a conductor and its resistance?

The resistance increases as the length of the conductor increases. Signup and view all the answers

What is the main difference between a voltmeter and an ammeter?

A voltmeter measures voltage, while an ammeter measures current. Signup and view all the answers

What happens to the total resistance of a circuit when resistors are connected in parallel?

The total resistance decreases. Signup and view all the answers

What is the effect of increasing the length of a conductor on its resistance?

The resistance increases Signup and view all the answers

Why do collisions between electrons and atoms in a conductor result in heat generation?

The electrons lose kinetic energy Signup and view all the answers

What is the main reason why light bulbs have high resistance?

Due to their thin filaments Signup and view all the answers

How does the cross-sectional area of a conductor affect its resistance?

A larger cross-sectional area decreases the resistance Signup and view all the answers

What is the relationship between the material of a conductor and its resistivity?

Different materials have different intrinsic resistivities Signup and view all the answers

What happens when electrons collide with atoms in a conductor?

They lose kinetic energy and slow down Signup and view all the answers

What is the purpose of understanding resistance in electrical circuits?

To design and analyze electrical systems Signup and view all the answers

What is the result of increasing the cross-sectional area of a conductor?

The resistance decreases Signup and view all the answers

What is the primary function of a resistor in a circuit?

To control the voltage and current flow Signup and view all the answers

What happens to the energy stored in a battery as it is used to drive a circuit?

It is converted into heat and light Signup and view all the answers

Why do cellphone chargers contain circuits with resistors?

To control the current flow and voltage to charge the battery safely Signup and view all the answers

What is the main difference between a series and parallel configuration of resistors?

The total resistance is different in both Signup and view all the answers

What is the primary function of a voltmeter in a circuit?

To measure the voltage Signup and view all the answers

What is the characteristic of superconductors?

They have no resistance at very low temperatures Signup and view all the answers

What is the purpose of a switch in a circuit?

To allow the circuit to be opened or closed Signup and view all the answers

What happens to the total resistance of a circuit when resistors are connected in series?

It increases Signup and view all the answers

What is the main reason why batteries go flat?

Because all the chemical potential energy is used up and converted into other forms of energy Signup and view all the answers

What is the primary function of an ammeter in a circuit?

To measure the current Signup and view all the answers

What is the result of collisions between electrons and atoms in a conductor?

Electrons lose kinetic energy, which is converted into heat Signup and view all the answers

Which of the following physical attributes does not affect the resistance of a conductor?

Color Signup and view all the answers

What happens to the resistance of a conductor when its length is tripled?

It is increased by three times Signup and view all the answers

Why do cellphone chargers get warm during use?

Due to the collisions between electrons and atoms in the conductor Signup and view all the answers

What is the effect of decreasing the cross-sectional area of a conductor on its resistance?

The resistance increases Signup and view all the answers

What is the relationship between the material of a conductor and its resistance?

Different materials have different intrinsic resistivities Signup and view all the answers

What is the purpose of understanding resistance in electrical circuits?

To design and analyze electrical systems Signup and view all the answers

What is the result of the flow of electrons in a conductor?

Heat is generated due to collisions with atoms Signup and view all the answers

In a series configuration, what happens to the voltage across each resistor?

The voltage across each resistor is different. Signup and view all the answers

What is the primary function of a battery in an electric circuit?

To provide energy to drive the current through the circuit. Signup and view all the answers

What happens to the resistance of a conductor when its length is quadrupled and its cross-sectional area is halved?

The resistance of the conductor increases. Signup and view all the answers

What is the purpose of using a voltmeter in a circuit?

To measure the voltage across the circuit. Signup and view all the answers

Why do superconductors have no resistance at very low temperatures?

Because the electrons move in a coordinated motion. Signup and view all the answers

What is the total resistance of three resistors connected in parallel with resistances of 2 ohms, 3 ohms, and 4 ohms?

1 ohm Signup and view all the answers

What is the primary function of a light bulb in a circuit?

To emit light when current flows through it. Signup and view all the answers

What happens to the current flowing through a circuit when the voltage is increased?

The current flowing through the circuit increases. Signup and view all the answers

What is the purpose of using an ammeter in a circuit?

To measure the current flowing through the circuit. Signup and view all the answers

What happens to the energy stored in a battery as it is used to drive a circuit?

The energy stored in the battery decreases. Signup and view all the answers

What is the primary reason for the generation of heat in a conductor during the flow of electric charge?

The electrons flowing through the conductor collide with the atoms, causing the electrons to lose kinetic energy. Signup and view all the answers

Which of the following is a characteristic of a conductor that has a high resistance?

A thin filament. Signup and view all the answers

What happens to the resistance of a conductor when its length is quadrupled?

The resistance is quadrupled. Signup and view all the answers

Which of the following materials would have the highest intrinsic resistivity?

Carbon. Signup and view all the answers

What is the primary reason why a light bulb filament is made of a thin material?

To increase the resistance of the filament and convert electrical energy into heat and light. Signup and view all the answers

What is the relationship between the cross-sectional area of a conductor and its resistance?

The resistance is inversely proportional to the cross-sectional area. Signup and view all the answers

What happens to the energy of the electrons flowing through a conductor when they collide with the atoms?

The energy of the electrons is converted into heat and light. Signup and view all the answers

What is the primary reason why understanding resistance is essential in designing electrical circuits?

To ensure the efficient transmission of electrical energy. Signup and view all the answers

What is the primary reason why a light bulb filament has high resistance?

To convert electrical energy into heat and light Signup and view all the answers

What is the effect of connecting resistors in parallel on the total resistance?

The total resistance decreases Signup and view all the answers

What is the purpose of a switch in a circuit?

To control the flow of current through the circuit Signup and view all the answers

What happens to the energy stored in a battery as it is used to drive a circuit?

It is converted into other forms of energy Signup and view all the answers

What is the characteristic of a material that has zero resistance at very low temperatures?

Superconductor Signup and view all the answers

What is the effect of increasing the cross-sectional area of a conductor on its resistivity?

It decreases. Signup and view all the answers

In a series configuration of resistors, what happens to the voltage drop across each resistor?

It is different. Signup and view all the answers

What is the primary function of a switch in a circuit?

To allow the circuit to be opened or closed. Signup and view all the answers

What happens to the energy stored in a battery as it is used to drive a circuit?

It decreases. Signup and view all the answers

What is the characteristic of a material that has no resistance at very low temperatures?

Superconductivity. Signup and view all the answers

What is the primary purpose of resistors in a circuit?

To control the current flow and voltage Signup and view all the answers

In a series configuration, what is the current through each resistor?

The same Signup and view all the answers

What is the result of using up all the chemical potential energy in a battery?

The battery goes flat Signup and view all the answers

What is the primary function of a voltmeter in a circuit?

To measure the voltage across components Signup and view all the answers

What is the characteristic of a superconductor?

It has no resistance at very low temperatures Signup and view all the answers

What is the effect of increasing the cross-sectional area of a conductor on its resistance?

It decreases the resistance Signup and view all the answers

Why do light bulbs emit light and heat?

Because of the high resistance of the filament Signup and view all the answers

How does the length of a conductor affect its resistance?

It increases the resistance Signup and view all the answers

What is the main reason why cellphone chargers get warm during use?

Because of the collisions between electrons and atoms in the conductor Signup and view all the answers

What determines the intrinsic resistivity of a material?

The material itself Signup and view all the answers

Gr 10 Physical Sciences Ch 13: Resistance

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Questions and Answers

What is the primary cause of resistance in a conductor?

What is the unit of measurement for resistance?

What happens to the resistance of a conductor when its length is doubled?

Why do light bulbs have high resistance?

What happens to the resistance of a conductor when its cross-sectional area is doubled?

What is the term for the opposition to the flow of electric charge in a circuit?

Why do wires have lower resistance than light bulbs?

What is the relationship between the material of a conductor and its resistance?

What determines the resistance of a material?

What is the total resistance of resistors connected in series?

What is the purpose of a resistor in a circuit?

Why do batteries go flat?

What is the primary function of a voltmeter in a circuit?

What is the characteristic of superconductors?

What is the purpose of a light bulb in a circuit?

What is the total resistance of resistors connected in parallel?

What is the purpose of a switch in a circuit?

Why do cellphone chargers get warm during use?

What is the main reason why a cellphone charger gets warm during use?

What is the main difference between a series and parallel configuration of resistors?

What is the purpose of a light bulb in a circuit?

What is the primary function of an ammeter in a circuit?

What happens to the energy stored in a battery as it is used to drive a circuit?

What is the characteristic of a material that has no resistance at very low temperatures?

What is the purpose of a switch in a circuit?

What is the relationship between the length of a conductor and its resistance?

What is the main difference between a voltmeter and an ammeter?

What happens to the total resistance of a circuit when resistors are connected in parallel?

What is the effect of increasing the length of a conductor on its resistance?

Why do collisions between electrons and atoms in a conductor result in heat generation?

What is the main reason why light bulbs have high resistance?

How does the cross-sectional area of a conductor affect its resistance?

What is the relationship between the material of a conductor and its resistivity?

What happens when electrons collide with atoms in a conductor?

What is the purpose of understanding resistance in electrical circuits?

What is the result of increasing the cross-sectional area of a conductor?

What is the primary function of a resistor in a circuit?

What happens to the energy stored in a battery as it is used to drive a circuit?

Why do cellphone chargers contain circuits with resistors?

What is the main difference between a series and parallel configuration of resistors?

What is the primary function of a voltmeter in a circuit?

What is the characteristic of superconductors?

What is the purpose of a switch in a circuit?

What happens to the total resistance of a circuit when resistors are connected in series?

What is the main reason why batteries go flat?

What is the primary function of an ammeter in a circuit?

What is the result of collisions between electrons and atoms in a conductor?

Which of the following physical attributes does not affect the resistance of a conductor?

What happens to the resistance of a conductor when its length is tripled?

Why do cellphone chargers get warm during use?

What is the effect of decreasing the cross-sectional area of a conductor on its resistance?

What is the relationship between the material of a conductor and its resistance?

What is the purpose of understanding resistance in electrical circuits?

What is the result of the flow of electrons in a conductor?

In a series configuration, what happens to the voltage across each resistor?

What is the primary function of a battery in an electric circuit?

What happens to the resistance of a conductor when its length is quadrupled and its cross-sectional area is halved?

What is the purpose of using a voltmeter in a circuit?

Why do superconductors have no resistance at very low temperatures?

What is the total resistance of three resistors connected in parallel with resistances of 2 ohms, 3 ohms, and 4 ohms?

What is the primary function of a light bulb in a circuit?

What happens to the current flowing through a circuit when the voltage is increased?

What is the purpose of using an ammeter in a circuit?

What happens to the energy stored in a battery as it is used to drive a circuit?

What is the primary reason for the generation of heat in a conductor during the flow of electric charge?

Which of the following is a characteristic of a conductor that has a high resistance?

What happens to the resistance of a conductor when its length is quadrupled?

Which of the following materials would have the highest intrinsic resistivity?

What is the primary reason why a light bulb filament is made of a thin material?

What is the relationship between the cross-sectional area of a conductor and its resistance?

What happens to the energy of the electrons flowing through a conductor when they collide with the atoms?

What is the primary reason why understanding resistance is essential in designing electrical circuits?

What is the primary reason why a light bulb filament has high resistance?

What is the effect of connecting resistors in parallel on the total resistance?

What is the purpose of a switch in a circuit?

What happens to the energy stored in a battery as it is used to drive a circuit?

What is the characteristic of a material that has zero resistance at very low temperatures?