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Using Amperes circuital law, obtain the expression for the magnetic field due to a long solenoid at a point inside the solenoid on its axis. A straight wire of length L is bent into semi-circular loop. Use Biot-Savart law to deduce an expression for the magnetic field at its centre due to current I passing through it.

Asked by Rahul agarwal 9th September 2013, 6:19 PM
Answered by Expert
Pls post one query at a time.
Answered by Expert 10th September 2013, 1:32 AM
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