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Electricity — Practice Quiz

ICSE · Class 8 · Physics

Try a 4-question quiz on Electricity for ICSE Class 8 Physics: tap an answer to check it and see why. 69 questions in the full chapter test.

69 questions40 flashcards10 formulas & key relations5 concepts

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Quick Quiz: Electricity

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Tap an answer to check it instantly. No sign-up needed for these 4.

1

A heater of power 1.5 kW works for 2 hours 30 minutes each day. What electrical energy does it consume in one day?

2

An electric iron rated 1.5 kW is used for 30 minutes. What energy is consumed in joules?

3

A bulb of 100 W, an iron of 750 W, and a television of 100 W are used together for 3 hours a day. What total electrical energy is consumed in a day?

4

An appliance of power 1.5 kW is used for 4 hours every day. What is the cost of electricity for 60 days at ₹6.25 per kWh?

69 Questions·
multiple choicetrue false

Sample Questions

1multiple choice
3 marks

A heater works at 220 V and draws 6.8 A. What is its power?

Show answer

1496 W

Use P = VI. So, P = 220 × 6.8 = 1496 W. This is about 1.5 kW.

2multiple choice
3 marks

A 100 W bulb works at 220 V. What is the safe current through it?

Show answer

0.45 A

Use I = Power / Voltage. So, I = 100 / 220 = 0.4545... A, which is about 0.45 A.

3multiple choice
3 marks

An electric oven of power 3 kW works for 2 hours per day. What electrical energy is consumed in 30 days?

Show answer

180 kWh

Daily energy = 3 × 2 = 6 kWh. In 30 days, energy = 6 × 30 = 180 kWh.

4multiple choice
3 marks

A 12 V battery sends a current of 2 A through a wire for 30 minutes. What electrical energy is supplied?

Show answer

43,200 J

Convert 30 minutes to 1800 s. Use W = VIt. So, W = 12 × 2 × 1800 = 43,200 J.

+65 more questions on Electricity (ICSE Class 8 Physics)

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Frequently Asked Questions

What are the important topics in Electricity for ICSE Class 8 Physics?
Key topics in Electricity include Current electricity is the electricity used, Potential difference is the work done, A household cable has three wires, Home appliances are connected in parallel. Study these first, then practise questions on each for Class 8 exams.
How many practice questions are there for Electricity?
There are 69 questions on Electricity. Try the 4-question sample quiz on this page first; each answer shows an explanation when you tap it.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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