A long solenoid of radius 1 mm has 100 turns per mm. If a current flows in the solenoid, the magnetic field strength at the centre of the solenoid is:
A
12.56 × 10⁻⁴ T
B
6.28 × 10⁻⁴ T
C
6.28 × 10⁻² T
D
12.56 × 10⁻² T

Question

A long solenoid of radius 1 mm has 100 turns per mm. If a current flows in the solenoid, the magnetic field strength at the centre of the solenoid is:

Accepted Answer

12.56 × 10⁻⁴ T

Answer

6.28 × 10⁻⁴ T

Answer

6.28 × 10⁻² T

Answer

12.56 × 10⁻² T

NEET 2022 Physics Magnetic Field in Solenoids MCQ Question

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