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WorksheetsVoltage, current and resistance
Total questions: 15
Worksheet time: 22mins
The table describes four different resistance wires.
They are all made from the same metal.
Which wire has the smallest resistance?
A
B
C
D
The circuit shown contains a battery, a 6.0 Ω resistor and two meters X and Y.
One meter records current and one meter records potential difference.
meter X : 2.0 A
meter Y : 12.0 V
meter X : 2.0 V
meter Y : 1.0 A
meter X : 12.0 A
meter Y : 2.0 V
meter X : 12.0 V
meter Y : 2.0 A
Which equation can be used to calculate the resistance R of a resistor?
V = I / R
I = V x R
R = V x I
V = I x R
Which symbols are used for the units of current and of resistance?
A
B
C
D
The resistance of a component in a circuit is found using an ammeter and a voltmeter.
How are the ammeter and the voltmeter connected?
the voltmeter and ammeter in parallel with the component
the voltmeter and ammeter in series with the component
the voltmeter in parallel with the component and the ammeter in series with the component
the voltmeter in series with the component and the ammeter in parallel with the component
A student uses a length of wire as a resistor. He makes a second resistor from the same material.
To be certain of making a second resistor of higher resistance, he should use a piece of wire that is:
longer and thicker.
longer and thinner.
shorter and thicker.
shorter and thinner.
What is the current in an electric circuit?
The energy of the circuit
The flow of electrons in the circuit
The power of the circuit
What represents electrons in a marble run?
The person pushing the marbles
The marbles
The tubes
What is the voltage in an electric circuit?
The power of the electrons
The charge of the electrons
The energy of the electrons
