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Important Questions

Electrical Power and Household Circuits

ICSE · Class 10 · Physics

Most important questions from Electrical Power and Household Circuits for ICSE Class 10 Physics board exam 2026. MCQs, short answer, and long answer questions with marks.

39 questions36 flashcards5 concepts

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An infographic showing various household appliances and how they convert electrical energy into other forms of energy (heat, light, mechanical, sound).
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39 Questions·
multiple choicemultiple correct

Sample Questions

1multiple correct

Which of the following formulas correctly represent electrical power?

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P = V × I, P = I² × R, P = V²/R

All three formulas P = V × I, P = I² × R, and P = V²/R are correct expressions for electrical power. They can be derived from each other using Ohm's law (V = IR).

2multiple choice

Calculate the electrical energy consumed by a 100W bulb used for 5 hours.

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0.5 kWh

Energy = Power × Time = 100W × 5h = 500 Wh = 0.5 kWh. Remember to convert watts to kilowatts by dividing by 1000.

3multiple correct

Why are household appliances connected in parallel?

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Each appliance gets full 220V, Each appliance works independently, If one appliance fails, others continue working

Parallel connection ensures each appliance gets full voltage (220V), works independently, and failure of one doesn't affect others. This is essential for household circuits.

4multiple choice

What is the purpose of earthing in electrical appliances?

Show answer

To protect from electric shock

Earthing provides a low resistance path for current to flow to ground if live wire touches the metal body of appliance, preventing electric shock to users and blowing the fuse.

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Frequently Asked Questions

What are the important topics in Electrical Power and Household Circuits for ICSE Class 10 Physics?
Key topics in Electrical Power and Household Circuits include Chapter Overview: Electrical Power and Household Circuits, Chapter Concept Map: Electrical Power and Household Circuits, Electrical Power and Household Circuits — Chapter Overview. These are the concepts ICSE Class 10 examiners draw on most — study them first, then practise related questions.
How to score full marks in Electrical Power and Household Circuits — ICSE Class 10 Physics?
Understand the core concepts first, then work through the 39 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Electrical Power and Household Circuits?
There are 39 practice questions available for Electrical Power and Household Circuits. These cover multiple question types including MCQs, short answer, and long answer questions.

Sources & Official References

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

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