There are 50 turns of a wire in every cm length of a long solenoid. If 4A currents is flowing in the solenoid, the approximate value of magnetic field along its axis at an internal point and at one end will be respectively:
Text Solution
Verified by ExpertsThe correct answer is:
C
Given, 
turns 
turns 
Magnetic field at an internal point
Magnetic field at one end
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