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Statehow the strength of the magnetic field producedat the centre of a coil by a current through the circularcoil can be increased. |
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Answer» Solution :The strenghtof THEMAGNETICFIELD (B) produced at the centre of a COIL by a current through a circular coil can be increased by- (1) Increaseingthe numberof turns N of the coil `(B prop N)`. (2) INCREASINGTHE currentI through thecoil `(B prop I)`. (3) Decreasing the radiusr of the coil `(B prop. (1)/(r))` . |
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