An insulated wire is wound so that it | EMF | JEE MAIN_2026

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JEE MAIN_2026

04-04-26_S2

Question

An insulated wire is wound so that it forms a flat coil with $\mathrm{N}=200$ turns. The radius of the innermost turn is $r_1=3 \mathrm{~cm}$, and of the outermost turn $r_2=6 \mathrm{~cm}$. If 20 mA current flows in it then the magnetic

Select the correct option:

A

4.4

B

2.64

C

3.25

D

1.2

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