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An electric current flows in a wire from...

An electric current flows in a wire from north to south.
What will be the direction of the magnetic field due to this wire at a point.

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If we align the thumb of our right hand in the direction of current, hence north to south, then curling the fingers tells the direction of magnetic field around it. (a) East (b) West (c ) Downward (d) Upward.
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