A conducting rod PQ of length 5 m moves with velocity 2î m/s without rotation in a uniform magnetic field (3ĵ+4k̂) T, as shown. Find the induced emf.

Question

G1 Physics · Accepted Answer

For a conductor rotating in uniform B, the motional potential difference is ΔV=1⁄2Bω(r²2-r12). Applying the radii and polarity shown gives 32.