General Physics 2: Electric Currents

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What is the measure of how easily electricity flows through a material?

Electrical conductivity (correct)

Thermal velocity

Electron velocity

Resistance

What happens to the conductivity of metals when the temperature increases?

It decreases (correct)

It remains the same

It increases

It becomes zero

What is the standard metric unit for resistance?

Ampere

Ohm (correct)

Watt

Volt

What slows down the movement of electrons through a material?

Collisions (D) Signup and view all the answers

What is the result of an increase in the number of collisions between free electrons in a conductor?

An increase in resistance (D) Signup and view all the answers

What is the movement of electrons through a material?

Electricity (A) Signup and view all the answers

What is the rate at which electric charge flows past a point on a circuit?

Current (B) Signup and view all the answers

What is the standard metric unit for current?

Ampere (A) Signup and view all the answers

What is the direction of electron flow in a circuit?

Out of the negative terminal, through the circuit and into the positive terminal (A) Signup and view all the answers

What is a property of materials that determines how easily electricity flows through them?

Conductivity (A) Signup and view all the answers

What is the relationship between the quantity of charge and time in determining current?

Current is the ratio of charge and time (D) Signup and view all the answers

What is a characteristic of materials with high conductivity?

Electricity flows easily (D) Signup and view all the answers

What is the characteristic of current in a series circuit?

The same current in each resistor (B) Signup and view all the answers

How are the resistor leads connected in a parallel circuit?

All leads on one side of the resistors are connected together (A) Signup and view all the answers

What is used to calculate the equivalent resistance for resistors?

Ohm's Law (C) Signup and view all the answers

What is the graphical representation of an electrical circuit called?

All of the above (D) Signup and view all the answers

What is the formula for calculating the equivalent resistance for resistors connected in series?

R_total = R1 + R2 +... (C) Signup and view all the answers

What is the purpose of a circuit diagram?

To simplify an electrical circuit (A) Signup and view all the answers

What is the primary function of resistors in a circuit?

To limit or regulate the flow of electric current (B) Signup and view all the answers

How are resistors commonly represented in a circuit diagram?

By a zigzag line (D) Signup and view all the answers

How do resistors affect the flow of electric current in a circuit?

They slow down the flow of electric current (A) Signup and view all the answers

What determines the equivalent resistance of a combination of resistors?

Both the individual values and the way they are connected (B) Signup and view all the answers

What is a common characteristic of most circuits?

They have more than one resistor (B) Signup and view all the answers

What is the purpose of using resistors in a circuit?

To create a precise quantity of resistance in a circuit (B) Signup and view all the answers

What is the main purpose of a circuit diagram?

To illustrate the relative positions of components and their relationships (A) Signup and view all the answers

What is the primary function of an ammeter?

To measure a small amount of current (D) Signup and view all the answers

How is a voltmeter connected to an electric circuit?

In parallel with the circuit (B) Signup and view all the answers

What is the connection polarity of an ammeter and a voltmeter?

Negative to negative, positive to positive (B) Signup and view all the answers

What is a common use of circuit diagrams?

To design and construct electrical equipment (A) Signup and view all the answers

What do circuit diagrams typically consist of?

Images of distinct components or standard symbols (A) Signup and view all the answers