MCQ Class 10 Science Chapter 11 Electricity

1. Electric power is inversely proportional to

2. An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be:

3. A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R’, then the ratio R/R’ is:

4. What is the maximum resistance which can be made using five resistors each of 1/5 W?

5. The resistance of hot filament of the bulb is about 10 times the cold resistance. What will be the resistance of 100 W-220 V lamp, when not in use?

6. The nature of the graph between potential difference and the electric current flowing through a conductor is

7. A battery of 10 volt carries 20,000 C of charge through a resistance of 20 Ω. The work done in 10 seconds is

8. How much more heat is produced if the current is doubled?

9. How much more heat is produced if the current is doubled?

10. Which of the following represents voltage?