Question

the magnetic field produced at the centre of circular coil is directly proportional to..........

Answer 1

The current flowing across the coil

Answer 2

The magnetic field produced at the centre of circular coil is directly proportional to current.

Explanation:

The magnetic field produced at the centre of circular coil is given by :

$B=\dfrac{\mu_o I}{2r}$

I is electric current

r is distance from coil

It is clear that the magnetic field produced at the centre of circular coil is directly proportional to the current and inversely proportional to the distance from coil.

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