Q1. [1]
The expressions that relate (i) Q, I and t and (ii) Q, V and W respectively are (Here the symbols have their usual meanings) :
- (a) (i) I = Q/t (ii) W = V/Q
- (b) (i) Q = I × t (ii) W = V × Q
- (c) (i) Q = I/t (ii) V = W/Q
- (d) (i) I = Q/t (ii) Q = V/W
Previously asked in CBSE board exam
2023 31/5/1 Q13
Generated by claude-sonnet-4-6 · 2026-06-15 06:44 · grounding rag
Model Answer
The correct answer is (b): (i) Q = I × t, and (ii) W = V × Q.
Explanation
- Electric charge Q = current (I) × time (t); this defines the relationship between charge, current, and time.
- Work done W = potential difference (V) × charge (Q); this defines potential difference as work done per unit charge (V = W/Q, rearranged gives W = V × Q).
- Examiners expect you to recall both standard definitions directly from the chapter on Electricity.
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