A long solenoid of radius 1 mm has 100 turns per mm. If 1 A current flows in the solenoid, the magnetic field strength at the center of the solenoid is [NEET 2022]
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Given, radius of solenoid,
Number of turns per 
Number of turns per metre 
i.e., 
turns/m
I =1A
Magnetic field strength at the centre of the solenoid
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