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Question

The magnetic flux linked with a coil varies as $$\phi =3t^2+4t+9$$. The magnitude of the emf induced at $$t=2$$ seconds is?


A
8 V
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B
16 V
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C
32 V
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D
64 V
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Solution

The correct option is B $$16$$ V
$$\phi =\dfrac{d\theta}{dt}$$
$$=6t+4=6(2)+4$$
$$=16V$$.

Physics
NCERT
Standard XII

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