AP EAMCET · PHYSICS · Magnetic Properties of Matter
A circular wheel with 10 spokes with its plane vertical along East-West is rotating about its natural axis with a uniform speed 100 revolutions per minute in the earth's magnetic field. Radius of the wheel is \(0.3 \mathrm{~m}\). If the emf induced between the centre of the wheel and the rim is \(3 \pi \mu \mathrm{V}\), angle of dip at the place is
(Vertical component of the earth's magnetic field \(\mathrm{B}_{\mathrm{V}}=15 \mu \mathrm{T}\) )
- A 1. \(\tan ^{-1}\left(\frac{1}{2}\right)\)
- B \(\tan ^{-1}\left(\frac{4}{5}\right)\)
- C \(\tan ^{-1}\left(\frac{3}{5}\right)\)
- D \(\tan ^{-1}\left(\frac{3}{4}\right)\)
Answer & Solution
Correct Answer
(D) \(\tan ^{-1}\left(\frac{3}{4}\right)\)
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