How many electrons move through a headli

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Target Exam

CUET

Subject

Physics

Chapter

Electrostatic Potential and Capacitance

Question:

How many electrons move through a headlight each second when a 12 V car battery powers a single 30 W headlight?

Options:

3 X 10⁺¹⁹

1.56 X 10¹⁹

2.4 X 10¹⁹

1.28 X 10¹⁹

Correct Answer:

1.56 X 10¹⁹

Explanation:

P = V I ; I/t = Ne ;

N = 1.56 X 10^-19 J