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Two similar coils of radius R are lying ...

Two similar coils of radius R are lying concentrically with their planes at right angles to each other. The currents flowing on them are I and 2I, respectively. The resultant magnetic field induction at the centre will be:

A

`(3mu_0I)/(2R)`

B

`(mu_0I)/(2R)`

C

`(mu_0I)/(R)`

D

`(sqrt(5)mu_0I)/(2R)`

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