Radio Amateur Quiz Canadian License

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Question B-005-006-008

A 12 volt light bulb is rated at a power of 30 watts. The current drawn would be:

Correct Answer

30/12 amperes

Explanation

Power (P) = Voltage (V) * Current (I). Therefore, I = P / V. I = 30 W / 12 V = 2.5 A.

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