A conducting rod of length ℓ moves with constant speed v perpendicular to a long straight wire carrying current I. If the nearer end is at distance r from the wire, the generated emf is:

Question

G1 Physics · Accepted Answer

For a moving conductor, ε=∫(v⃗×B⃗)·dℓ⃗. Combine this with Ohm’s law and Lenz’s law where required. The result is Image 2.