Question

When a magnetic needle is placed over a current carrying wire it deflects towards east when current flows from south to north and west when the current flows from north to south why does it particularly deflect toward east and west respectively?
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Answer 1

Answer:

The magnetic field is always from north to south. In our case, it travels from left to right(if you stand facing towards north). Hence the north pole of the magnetic needle deflects towards east(since the north and south pole attracts). Same for the other case too.

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Answer 2

Explanation:

The magnetic field is always from north to south. In our case, it travels from left to right(if you stand facing towards north). Hence the north pole of the magnetic needle deflects towards east(since the north and south pole attracts). Same for the other case too