Worksheets on Electricity

Electricity Worksheet-22

1. Two students perform experiments on series and parallel combinations of two given resistor R₁ and R₂ and plot the following V – I graphs,

Which of the graphs is (are) correctly labelled in terms of the words 'series' and 'parallel' ? Justify your answer.

2. You are given three resistors of 10 Ω , 10 Ω and 20 Ω; a battery of emf 2.5 V a key, an ammeter and a votmeter. Draw a circuit diagram showing the correct connections of all given components such that the voltmeter gives a reading of 2.0 V

Electricity Worksheet-23

1. State which has a higher resistance : a 50 W or a 25 W lamp bulb and how many times ?

2. What is the power of torch bulb rated at 2.5 V and 500 mA ?

3. There are two electric bulbs, (i) marked 60 W, 220 V and (ii) marked 100 W ; 220 V. Which one of them has higher resistance ?

4. Out of the two, a toaster of 1 kW and an electric heater of 2 kW, which has a greater resistance?

5. What is the SI unit of electrical potential ?

6. What Is meant by the statement "Potential difference between two points A and B in an electric circuit is 1 volt" ?

Electricity Worksheet-24

1. An electric iron draws a current of 1.5 A when the voltage is 200 volts. Calculate the amount of electric charge flowing through it in one hour.

2. An electric appliance draws a current of 0.4 A when the voltage is 200 volts. Calculate the amount of charge flowing through it in one hour.

3. Calculate the amount of charge that would flow in 1 hour through the element of an electric bulb drawing a current of 0.2 A.

4. Calculate the amount of charge that would flow in 2 hours through the element of an electric bulb drawing a current of 0.25 A.

5. Calculate the amount of charge that would flow in 1 hour through the element of an electric iron drawing a current of 0.4 A.