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The magnetic field at the centre of semi...

The magnetic field at the centre of semicircle o in the figure is

A

`B = (mu_0i)/(4r)`

B

`(mu_0i)/(4r) (1+ 2pi)`

C

`(mu_0i)/(4pi r) (pi - 2)`

D

`(mu_0 i)/(4pi r) ( pi + 2)`

Text Solution

Verified by Experts

The correct Answer is:
D
`B = B_1 + B_2 + B_3 = (mu_0i)/(4pi r) + (mu_0 i)/(4r) + (mu_0i)/(4pi r) `
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