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Questions  

A solenoid of 1000 turns per metre has a core with relative permeability 500. Insulated winding of the solenoid carry an electric current of 5 A. The magnetic flux density produced by the solenoid is: (permeability of free space  =4π×107H/m)

a
2×10−3π T
b
10−4π T
c
π5T
d
π T

detailed solution

Correct option is D

Magnetic flux density  =B=μni=μ0μrni  =5004π×10−710005=10000000π×10−7 =π T

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Similar Questions

A 200 -turn solenoid having a length of 5 m and a diameter of 10 cm carries a current of 0.30 A. The magnitude of the magnetic field B  inside the solenoid is 1.5×10pT. Find the value of p.


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