Mon August 01, 2011 By: Sadiq Nabi

why magnetic field outside solenoid is zero?

Expert Reply
Mon August 01, 2011

The magnetic field lines exist outside the solenoid, but the number of field lines per unit area outside the solenoid is much less compared to the number of lines per unit area inside the solenoid. Hence the magnetic field outside is so feeble that it is considered to be practically zero.

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