TS EAMCET · Physics · Electromagnetic Induction
A train with an axle of length 1.66 m is moving towards north with a speed of \(90 \mathrm{kmh}^{-1}\). If the vertical component of the earth's magnetic field is \(0.2 \times 10^{-4} \mathrm{~T}\), the emf induced across the ends of the axle of the train is
- A 16.6 mV
- B 1.66 mV
- C 0.83 mV
- D 8.3 mV
Answer & Solution
Correct Answer
(C) 0.83 mV
Step-by-step Solution
Detailed explanation
Given Length of \(a \times \ell e=1.66 \mathrm{~m}\) Speed of train, \(\mathrm{v}=90 \mathrm{~km} \mathrm{~h}^{-1}=\frac{90 \times 1000}{60 \times 60}=25 \mathrm{~m} / \mathrm{s}\) Vertical component of magnetic field, \(\mathrm{Bv}=0.2 \times 10^{-4} \mathrm{~T}\) Emf induced,…
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