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Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACInduced Electric FieldEasy2 minPYQ_2011

PhysicsEasysingle choice

The current $i$ in a coil varies with time as shown in the figure. The variation of induced emf with time would be
NEET 2011 (Screening)

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Answer:

Solution:

We know $e = - L \frac{d i}{d t}$ During 0 to $\frac{T}{4}, \frac{d i}{d t} =$ constant So, $e = -$ ve For $\frac{T}{4}$ to $\frac{T}{2}, \frac{d i}{d t} = 0$ $e = 0$ For $\frac{T}{2}$ to $\frac{3 T}{4}, \frac{d i}{d t} =$ constant $e = + ve$

Stream:NEETSubject:PhysicsTopic:EMI/ACSubtopic:Induced Electric Field

⏱ 2mℹ️ Source: PYQ_2011

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