MHT CET · Physics · Electromagnetic Induction
The magnitude of flux linked with coil varies with time as \(\phi=3 t^2+4 t+7\). The magnitude of induced e.m.f. at \(t=2 \mathrm{~s}\) is
- A \(3 \mathrm{~V}\)
- B \(16 \mathrm{~V}\)
- C \(10 \mathrm{~V}\)
- D \(7 \mathrm{~V}\)
Answer & Solution
Correct Answer
(B) \(16 \mathrm{~V}\)
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \phi=3 t^2+4 t+7 \\ & |e|=\frac{d \phi}{d t}=6 t+4 \\ & \text { At } t=2 s,|e|=16 V\end{aligned}\)
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