Verified Solution • 2025–26 Session moderate

QNEET-2022-Ph-534: NEET 2022 Physics - Class 12 NEET-2022-Ph-534 Solution: A closely packed coil having 1000 turns has an average radius…

A closely packed coil having 1000 turns has an average radius of 62.8 cm. If current carried by the wire of the coil is 1 A the value of magnetic field produced at the centre of the coil will be (permeability of free space =

4\pi \times 10^{-7}\ \text{H/m}

) nearly

10^{-3}\ \text{T}

10^{-1}\ \text{T}

10^2\ \text{T}

10^2\ \text{T}

Multiple Choice Options

A 10 $-$ _ 3 T
B 10 $-$ _ 1 T
C 10 $-$ _ 2 T
D 10 2 T

Step-by-Step Verified Solution

Magnetic field at the centre of coil B = _ 0 N I 2 R On substituting the given values _ B = 4 � _ 10 _ 7 _ 10 3 2 _ 62.8 _ 10 _ 2 = 10 _ 3 T

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