A component dissipating 20 watts operates at 10 volts. What current does it draw?
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Correct!
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Correct answer to question 53 (Electronics Information): 2 amperes
Method
Rearranging the power formula, current equals power divided by voltage, so 20 / 10 = 2 amperes. Dividing voltage by power instead gives 0.5.
Updated: November 2026
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