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Electric circuits revision

Last updated 10 months ago
22 questions
1

What is the unit of electric current?

1

What is the property of a material that opposes the flow of electric current called?

1

The diagrams show four circuits.

Which circuit contains two bulbs connected in parallel with each other, and contains an ammeter that measures the total current in the two bulbs?

1

What happens to the resistance when more resistors are added in parallel?

1

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

1

What happens to the total resistance in a parallel circuit when a new resistor is added?

2

What is the potential difference across a 4 ohm resistor with a current of 0,5 A?

2

What is the total resistance in this circuit?

1

Which of the following describes emf?

1

1

What are resistors in series best described as?

1

When resistors are connected in parallel, they act as:

1

What is the property of an ohmic conductor?

1

What unit is used to measure work done by electricity?

2

What is the voltmeter reading over the 12 Ω resistor?

2

What is the effective resistance of the two resistors in parallel?

2

What is the current in the 12 Ω resistor?

2
In the following circuit, the reading on the voltmeter is 24 V.
The current in the circuit is ______ amperes and the emf of the battery is _______ volts.
Other Answer Choices:
2
0,5
24
1

A student investigates how the current in resistor R varies with the voltage across it.
Which circuit does the student use?

2

What is the resistance of the light bulb?

2

Which statement is correct?

1

Which symbol represents a fuse?