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题目
题目

APPHYSC142-031 with labs Exam Review - Final

单项选择题

A circular coil with an area of 0.0500 m2 is wrapped with 500 turns of wire and is placed in a uniform magnetic field perpendicular to its plane. If the field changes in value from -0.100 T to +0.150 T in an interval of 0.500 s, what is the magnitude of the average voltage induced in the coil?

选项
A.12.5 V
B.125 V
C.188 V
D.250 V
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标准答案
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思路分析
We start by identifying the formula for the induced electromotive force in a coil: ε_avg = N · ΔΦ / Δt, where Φ is the magnetic flux per turn and N is the number of turns. Option 1: 12.5 V. This matches the computed value, but we will verify by calculating step by step to confirm. Step 1 — Compute flux p......Login to view full explanation

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