alleryA 4 Ω resistor is in series with a parallel pair of 6 Ω and 3 Ω across 12 V. Find total current and power in the 3 Ω resistor.
A2 A; 12 W
B4 A; 48 W
C2 A; 16/3 W
D2 A; 48 W
Answer & Solution
Correct answer: C. 2 A; 16/3 W
The parallel resistance is 2 Ω, giving 2 A overall and 4 V across that pair, so the 3 Ω resistor dissipates 4²/3 = 16/3 W.
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