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In figure bcdf is a circular coil of non...

In figure bcdf is a circular coil of non-insulated thin uniform conductors, ab and de are very long straight parallel conductors, ab and de are very long straight parallel conductors, tangential to the coil at the points b and d. If the current `5A` enters the coil from a to b, find the magnetic field induction at O, the centre of the coil. The diameter of the coil is `10cm`.

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