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Two concentric coils each of radius 2pi ...

Two concentric coils each of radius `2pi` cm are placed at right angles to each other. 3A and 4 A are the currents flowing in the coils. The magnetic induction in weber/`m^(2)` at the centre of the coils will be `(mu_(0)=4pixx10^(-7)H.m^(-1))`

A

`5xx10^(-5)`

B

`7xx10^(-5)`

C

`12xx10^(-5)`

D

`10^(-5)`

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