A closely wound solenoid of 
long has 5 layers of windings of 400 turns each. The diameter of the solenoid is 
. If the current carried is 
, then the magnitude of the magnetic field inside the solenoid near its centre is approximately
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Length of Solenoid, 
Diameter of a solenoid, 
Current, 
Total number of turns. 
Number of turns per unit length 
Magnetic field at the center of solenoid
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