TS EAMCET · Physics · Electromagnetic Induction
A circular coil of area \(200 \mathrm{~cm}^2\) and 50 turns is rotating about its vertical diameter with an angular speed of \(40 \mathrm{rads}^{-1}\) in a uniform horizontal magnetic field of magnitude \(2 \times 10^{-2} \mathrm{~T}\). The maximum emf induced in the coil is
- A 1.2 V
- B 0.8 V
- C 0.6 V
- D 0.3 V
Answer & Solution
Correct Answer
(B) 0.8 V
Step-by-step Solution
Detailed explanation
When a coil is rotated in an uniform magnetic field, then Induced emf, \(\mathrm{e}_{\max }=\mathrm{N}\) B A\(\omega\) \(\begin{aligned} & =50 \times 2 \times 10^{-2} \times 200 \times 10^{-4} \times 40 \\ & =0.8 \mathrm{~V} \end{aligned}\)
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