A Metal Rod of Length L Moves with Velocity V,perpendicular

question 70

Multiple Choice

A metal rod of length L moves with velocity v,perpendicular to its length,in a magnetic field B,which is perpendicular to both the rod and its velocity.If the length of the rod is doubled,what happens to the electric field in the rod?

• A) it stays the same
• B) it doubles
• C) it quadruples
• D) it halves
• E) it quarters

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