A metallic conductor of length 1 m rotates in a vertical plane parallel to east-west direction about one of its end with angular velocity 5 rad s - 1 . If the horizontal component of earth's magn

Question

A metallic conductor of length 1 m rotates in a vertical plane parallel to east-west direction about one of its end with angular velocity 5 rad s - 1 . If the horizontal component of earth's magnetic field is 0 . 2 × 10 - 4 T , then emf induced between the two ends of the conductor is

TestHub · Accepted Answer

Given here, B H = 0 . 2 × 10 - 4 T , ω = 5 rad s - 1 and l = 1 m . Emf induced in a rotating conducting rod is given by, ε = 1 2 B ω l 2 Substituting the given values, we obtain ε = 1 2 × 0 . 2 × 10 - 4 × 5 × 1 2 = 0 . 5 × 10 - 4 V = 50 μV

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