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Physics-

General

Easy

Question

Fig. shows a conducting loop being pulled out of a magnetic field with a constant speed v. Which of the four plots shown in fig. may represent the power delivered by the pulling agent as a function of the constant speed v.

A
B
C
D

The correct answer is: B

$P equals F V equals B i l V equals B open parentheses fraction numerator B v l over denominator R end fraction close parentheses l V comma P proportional to V to the power of 2 end exponent$

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