First slide
Induced Electric Field and Magnetic field
Question

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

 

Moderate
Solution

Due to the time varying magnetic field induced electric field will be set-up and its lines are in anticlockwise sense, so force on stationary charge is along (3) 

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