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Magnetic field at point O due to straigh...

Magnetic field at point O due to straight conductor PQ is

A

`(20mu_0 i)/(pir) o`

B

`(mu_0 i)/(20πr) o.`

C

`(mu_0 i)/(5πr) ox`

D

`(mu_0 i)/(20pir) ox`

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