A uniform but time-varying magnetic field exists in the cylindrical region and directed into the paper. If field decrease with time and a positive charge placed at any point inside the region, then it moves

Question

A uniform but time-varying magnetic field exists in the cylindrical region and directed into the paper. If field decrease with time and a positive charge placed at any point inside the region, then it moves, along 1, along 2, along 3, along 4

MARKS App · Accepted Answer

∫ E . d l = - π r 2 d B d t E × 2 π r = + π r 2 × d B d t (a s d B d t = - v e) E = + v e ∴ assume direction is right so q charge move along 4

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