DC circuitsQuestion 1332 of 1506

A current of 10 A flows in a 30 Ω heating element. How much power does the element dissipate?

3000 W
9000 W
300 W
1500 W

Show answer

Correct answer: 3000 W

P = I² × R = (10 A)² × 30 Ω = 3000 W.

Source: Computed, 2.4: Calculating Electric Power

Questions last reviewed: 18 October 2026

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