What are the directions of the magnetic field between and outside a pair of two parallel large sheets carrying currents in the same directions, as illustrated in Figure (from the side shown)?

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towards us between the plates and away from us above and below the plates.

towards us between the plates and zero above and below the plates.

towards us above the plates and away from us below plates and zero between plates.

towards us above and below the plates and zero between the plates

answer is B.

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Detailed Solution

Using right hand thumb rule, we can determine the direction of magnetic field.

Between the plates the direction of magnetic fields is opposite to each other, hence net field is zero.

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