GK QUESTION#2946

A conductor rod moves with velocity v perpendicular to a uniform magnetic field B. If the length of the rod perpendicular to both v and B is L, what is the magnitude of the induced emf across its ends?

ABL²v
BBLvCorrect answer
CBv/L
DB/(vL)

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Answer

B. BLv

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Explanation

For the stated mutually perpendicular field, velocity and rod length, the magnitude of the motional emf is ε = BLv. The geometrical conditions are essential; the expression is not a general formula for every orientation.

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A conductor rod moves with velocity v perpendicular to a uniform magnetic field B. If the length of the rod perpendicular to both v and B is L, what is the magnitude of the induced emf across its ends?

Answer

Explanation

A conductor rod moves with velocity v perpendicular to a uniform magnetic field B. If the length of the rod perpendicular to both v and B is L, what is the magnitude of the induced emf across its ends?

Answer

Explanation

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