JEE Main 2022 Physics question
A metallic rod of length 20 cm is placed in North-South direction and is moved at a constant speed of 20 m/s towards East. The horizontal component of the Earth's magnetic field at that place is T and the angle of dip is 45°. The emf induced in the rod is mV.
Answer: 16
Solution
The motional emf is = v, where the vertical component of the field is = tan(45°) =
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