Question 335: Electromagnetic Induction

Question

In a coil of resistance 10 $$\Omega $$, the induced current developed by changing magnetic flux through it, is shown in figure as a function of time. The magnitude of change in flux through the coil in weber is

Accepted Answer

q = Area under i-t graph
= $${1 \over 2} 	imes 4 	imes 0.1$$ = 0.2 C
As q = $${{\Delta \phi } \over R}$$
$$ \Rightarrow $$ $$\Delta $$$$\phi $$ = qR = 0.2$$ 	imes $$10 = 2 weber

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8

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2

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6

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4

Electromagnetic Induction

In a coil of resistance 10 $\Omega $, the induced current developed by changing magnetic flux through it, is shown in figure as a function of time. The magnitude of change in flux through the coil in weber is

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