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    Exam 21: Electric Current and Direct-Current Circuits
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    A Light Bulb Operating at a Dc Voltage of 120
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A Light Bulb Operating at a Dc Voltage of 120

Question 19

Question 19

Multiple Choice

A light bulb operating at a dc voltage of 120 V has a resistance of 200 Ω.How much power is dissipated in this bulb?


A) 100 W
B) 60 W
C) 72 W
D) 14 mW
E) 7.2 W

Correct Answer:

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