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Magnetic field at center of an equilater...

Magnetic field at center of an equilateral triangle of side length 9cm having current 2A is

A

`4 X 10^-4 T`

B

`4 X 10^-5 T`

C

`4 X 10^-3 T`

D

`4 X 10^-2 T`

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JEE MAINS PREVIOUS YEAR-JEE MAIN 2021-PHYSICS SECTION B
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