TS EAMCET · Physics · Magnetic Properties of Matter
A wheel of 20 metallic spokes each \(40 \mathrm{~cm}\) long is rotated with a speed of \(180 \mathrm{rev} / \mathrm{min}\) in a plane normal to the horizontal domponent of earth's magnetic field \(\mathrm{H}_{\mathrm{e}}\) at a place. If \(\mathrm{H}_{\mathrm{e}}=0.4 \mathrm{G}\) (Gauss) at that place, the induced emf between the axle and the rim of the wheel is
- A \(192 \pi \times 10^{-7} \mathrm{~V}\)
- B \(256 \pi \times 10^{-7} \mathrm{~V}\)
- C \(148 \pi \times 10^{-7} \mathrm{~V}\)
- D \(110 \pi \times 10^{-7} \mathrm{~V}\)
Answer & Solution
Correct Answer
(A) \(192 \pi \times 10^{-7} \mathrm{~V}\)
Step-by-step Solution
Detailed explanation
Let induced emf be 'e'. Then…
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