Electricity and magnetism

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Part 1: Multiple Choice Questions

1. In a series circuit, if one bulb burns out, what happens to the other bulbs?

They continue to work normally

They all go out

They become brighter

Only half of them go out

2. According to Ohm's Law, if voltage increases and resistance stays the same, what happens to current?

Current decreases

Current increases

Current stays the same

Current becomes zero

3. What is the unit of measurement for electrical current?

Volts (V)

Ohms (Ω)

Amperes (A)

Watts (W)

4. In a parallel circuit, each branch has:

The same current

The same voltage

The same resistance

Half the total voltage

5. What creates an electromagnet?

A permanent magnet near metal

Electric current flowing through a coil of wire

Static electricity on a surface

Two magnets placed together

Part 2: Short Answer Questions

6. State Ohm's Law and write the formula.

7. Calculate the current in a circuit if the voltage is 12V and the resistance is 4Ω. Show your working.

8. Explain one advantage and one disadvantage of series circuits compared to parallel circuits.

Advantage:

Disadvantage:

9. Describe how you could increase the strength of an electromagnet.

10. A circuit has a voltage of 24V and a current of 3A. Calculate the resistance. Show your working.

Electricity and Circuits Test

Electricity and magnetism

Part 1: Multiple Choice Questions

Part 2: Short Answer Questions

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