TS EAMCET · Physics · Electromagnetic Induction
A wheel with radial metal spokes \(1 \mathrm{~m}\) in length is rotated in a magnetic field of \(0.5 \times 10^{-4} \mathrm{~T}\) normal to the plane of the wheel. If the induced emf between the rim and axle is \(\pi / 3000 \mathrm{~V}\), then the rotational speed of the wheel in revolutions per minute is
- A 400
- B 500
- C 600
- D 700
Answer & Solution
Correct Answer
(A) 400
Step-by-step Solution
Detailed explanation
Induced emf between rim and axle of wheel \[ =\frac{1}{2} B \omega R^2 \] So,…
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