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Electricity — Flashcards

ICSE · Class 8 · Physics

40 flashcards for Electricity (ICSE Class 8 Physics) to test yourself on key terms and facts. Sample: "State the relation between work done, charge"

69 questions40 flashcards10 formulas & key relations5 concepts

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40 Flashcards·
Electric potential differenceElectric currentElectrical energyElectrical powerPower calculationCharge calculationWork and potential differenceSafe current
Card 1Electric potential difference

State the relation between work done, charge, and potential difference.

Answer

Formula: W = QV Meaning: W = work or energy, Q = charge, V = potential difference. Units: W in joule (J), Q in coulomb (C), V in volt (V). Quick use: If Q = 2 C and V = 5 V, then W = 2 × 5 = 10 J.

Card 2Electric current

State the formula for current and charge.

Answer

Formula: I = Q/t, so Q = It Meaning: I = current, Q = charge, t = time. Units: I in ampere (A), Q in coulomb (C), t in second (s). Quick use: If I = 3 A for 4 s, then Q = 3 × 4 = 12 C.

Card 3Electrical energy

State the formula for electrical energy supplied in a circuit.

Answer

Formula: W = VIt Meaning: W = energy, V = potential difference, I = current, t = time. Units: W in joule (J), V in volt (V), I in ampere (A), t in second (s). Quick use: If V = 12 V, I = 2 A, and t = …

Card 4Electrical power

State the formula for electrical power.

Answer

Formula: P = W/t = VIt/t = VI Meaning: P = power, W = work or energy, V = voltage, I = current, t = time. Units: P in watt (W), V in volt (V), I in ampere (A). Quick use: If V = 220 V and I = 2 A, the…

Card 5Power calculation

An appliance works at 220 V and takes 2 A current. Find its power.

Answer

Given: V = 220 V, I = 2 A Formula: P = VI Step 1: Substitute values P = 220 V × 2 A Step 2: Multiply P = 440 W Answer: 440 W…

Card 6Charge calculation

A current of 3 A flows for 10 s. Find the charge transferred.

Answer

Given: I = 3 A, t = 10 s Formula: Q = It Step 1: Substitute values Q = 3 A × 10 s Step 2: Multiply Q = 30 C Answer: 30 C…

Card 7Work and potential difference

A potential difference of 12 V moves 5 C of charge. Find the work done.

Answer

Given: V = 12 V, Q = 5 C Formula: W = QV Step 1: Substitute values W = 5 C × 12 V Step 2: Multiply W = 60 J Answer: 60 J…

Card 8Safe current

An electric heater is rated 1500 W and works on 220 V. Find the safe current.

Answer

Given: P = 1500 W, V = 220 V Formula: I = Power of appliance / Voltage at which it works Step 1: Substitute values I = 1500 / 220 Step 2: Divide I = 6.8 A Answer: 6.8 A…

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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 flashcards are available for Electricity?
There are 40 flashcards for Electricity covering key definitions, facts and ideas. A few sample cards are shown on this page.
How should I revise Electricity for Class 8 exams?
Learn the core ideas first, then work through the 69 practice questions on Electricity. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

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

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