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  • A current passing through a circular coil of two turns produces magnetic field B at its centre. The coil is then rewound so as to have four turns and the same current is passed through it. The magn

A current passing through a circular coil of two turns produces magnetic field B at its centre. The coil is then rewound so as to have four turns and the same current is passed through it. The magnetic field at its centre now is

Option: 1

2 B


Option: 2

\mathrm{\frac{B}{2}}


Option: 3

\mathrm{\frac{B}{4}}


Option: 4

4 B


Answers (1)

best_answer

Turn doubled Field \Rightarrow 2^2=4

Posted by

Sanket Gandhi

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