AP EAMCET · PHYSICS · Electromagnetic Induction
The current in a coil changes from \(3 \mathrm{~A}\) to \(1 \mathrm{~A}\) in \(0.1 \mathrm{~s}\) in a coil of self-inductance \(8 \mathrm{mH}\). The emf induced in the coil is
- A \(16 \mathrm{~V}\)
- B \(1.6 \times 10^{-2} \mathrm{~V}\)
- C \(16 \times 10^{-2} \mathrm{~V}\)
- D \(2 \mathrm{~V}\)
Answer & Solution
Correct Answer
(C) \(16 \times 10^{-2} \mathrm{~V}\)
Step-by-step Solution
Detailed explanation
Change in currents in the coil \(\Delta I=(3-1) \mathrm{A}=2 \mathrm{~A}\) Time interval, \(\Delta t=0.1 \mathrm{~s}\) Self induction, \(L=8 \mathrm{mH}=8 \times 10^{-3} \mathrm{H}\) \(\therefore\) Induced emf in the coil,…
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