Electric Current Medium

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Electric Current Quiz (Medium)

1. What is the unit of electric current?

a) Ampere b) Volt c) Ohm

2. Which material is commonly used as a fuse in electrical circuits?

a) Copper b) Silver c) Aluminum

3. The resistance of a conductor depends on its:

a) Length only b) Diameter only c) Length and cross-sectional area

4. What is the potential difference across a component that has a resistance of 5 ohms and carries a current of 2 amperes?

a) 7 volts b) 10 volts c) 2.5 volts

5. Which component of an electric circuit is used to store electric charge?

a) Resistor b) Capacitor c) Inductor

6. What is the power consumed by a device that has a resistance of 10 ohms and is connected to a 20-volt battery?

a) 2 watts b) 40 watts c) 200 watts

7. Which type of circuit has only one path for current to flow?

a) Series circuit b) Parallel circuit c) Complex circuit

8. What happens to the total resistance in a parallel circuit as more resistors are added?

a) Increases b) Decreases c) Remains the same

9. An electric circuit is said to be open when:

a) It has a break or gap b) It is closed c) It has a short circuit

10. Which of the following materials is commonly used for making electrical wires?

a) Aluminum b) Iron c) Copper