45 Questions
What happens to the total voltage when cells are connected in series?
It increases
What is a characteristic of an ammeter?
It has a very small resistance
What happens to the total resistance when resistors are added in series?
It increases
What is the current through each component in a series circuit?
The same
What is the total potential difference across a series circuit?
The sum of the potential differences across each component
In a series circuit with two equal resistors and a 9V battery, what is the voltage across each resistor?
4.5V
If the total voltage of a battery is 9V and the voltage across one resistor is 4V, what is the voltage across another resistor?
5V
What is the purpose of an ammeter in a circuit?
To measure the current
What is the purpose of a voltmeter in an electric circuit?
To measure the potential difference between two points
What happens to the electric current in a series circuit?
The same current flows through all the components
How are resistors connected in a series circuit?
In series with each other
What is the difference between potential difference and electric current?
Potential difference is the energy gained per charge, while electric current is the flow of electrons
What is the purpose of an ammeter in an electric circuit?
To measure the total current flowing through the circuit
How is a voltmeter connected to measure the potential difference?
In parallel with the component
What is the characteristic of a series circuit?
Only one path for electric current to flow
What is the primary function of a voltmeter in an electric circuit?
To measure the potential difference between two points
Why is it incorrect to connect a voltmeter in series with a component in a circuit?
Because it will not provide a meaningful reading
What is the key characteristic of a series circuit?
The same current flows through all components
What is measured by the difference in potential energy per charge between two points in an electric circuit?
Potential difference (voltage)
What instrument is used to measure the total current flowing through a circuit?
Ammeter
What is the purpose of an electric circuit?
To transmit energy from one point to another
What is the number of paths available for electric current to move through in a series circuit?
One
What is the effect on the total current when resistors are added in series?
It decreases
In a series circuit, what is the voltage across each component?
Different for each component
What is the purpose of an ammeter in a circuit?
To measure the current
What happens to the total voltage when cells are connected in series?
It increases
In a series circuit, what is the relationship between the total current and the current through each component?
The total current is the same as the current through each component
What is the characteristic of an ammeter?
Low resistance
In a series circuit with two resistors and a 9V battery, what is the voltage across one resistor if the other resistor has 4V across it?
5V
What is the effect on the total potential difference when cells are connected in series?
It increases
What is the primary function of a potential difference in an electric circuit?
To measure the energy per charge between two points
Why must an ammeter be connected in series in a circuit?
To measure the total current flowing through the circuit
What would happen if a voltmeter is connected in series with a component in a circuit?
It would give an incorrect reading of the potential difference
In a series circuit, what is the relationship between the current through each component?
The current through each component is the same
What is the effect on the circuit if a voltmeter is connected in parallel with a component?
It would give a meaningful reading of the potential difference
What is the function of a resistor in a series circuit?
To decrease the electric current through the circuit
What is the number of paths available for electric current to move through in a series circuit?
One
What is the primary reason for an ammeter to have a very small resistance?
To avoid affecting the current it is measuring
When cells are connected in series, what is the total voltage of the battery?
The sum of the individual cell voltages
What happens to the total current when resistors are added in series?
It decreases
In a series circuit, what is the relationship between the potential difference across each component and the total potential difference?
The potential difference across each component is less than the total potential difference
In a series circuit with two equal resistors and a 9V battery, what is the total resistance?
Twice the value of one of the resistors
What is the voltage across one resistor if the total voltage is 9V and the voltage across the other resistor is 4V?
5V
Why is it important to connect an ammeter in parallel with a component in a circuit?
To avoid affecting the current it is measuring
What happens to the voltage across each resistor if the resistors are not equal in a series circuit?
The voltage across each resistor is different
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