2. A long solenoid with its axis along z-axis, radius a and n turns per unit...

 

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2. A long solenoid with its axis along z-axis, radius a and n turns per unit length carries a time-dependent current I(t) in 0 direction. Find the electric field (magnitude and direction) at a distance s from the axis (both inside and outside the solenoid). You can assume that the Biot-Savart law is valid for time varying current. 2. A long solenoid with its axis along z-axis, radius a and n turns per unit length carries a time-dependent current I(t) in 0 direction. Find the electric field (magnitude and direction) at a distance s from the axis (both inside and outside the solenoid). You can assume that the Biot-Savart law is valid for time varying current.