Single Answer MCQ
Q-00019396
If the resistance of a circuit is 5 ohms and the power consumed is 100 W, what is the voltage across the circuit?
1
10 V
2
20 V
3
5 V
4
25 V
Answer and Solution
Answer
B. 20 V
Solution:
Using P = V^2/R, we get V = sqrt(P × R) = sqrt(100 W × 5 Ω) = sqrt(500) ≈ 22.36 V, but you must calculate accurately for the exact answer.
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