How much power is dissipated in a 6 ohm resistor carrying 3 amperes?
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Correct!
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Correct answer to question 107 (Electronics Information): 54 watts
Method
Power equals current squared times resistance: 3 squared is 9, and 9 x 6 = 54 watts. Multiplying current by resistance without squaring gives 18, which is the voltage drop, not the power.
Updated: November 2026
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