Question

A
circular loop of wire is perpendicular to a 0.16 T uniform magnetic
field. The magnetic flux through the loop is 24 mWb. What is the
radius of the loop?

Answer #1

The magnetic flux through a closed loop is given by,

where B is the magnetic field and A is the area vector.

Here B and A are perpendicular. So . Therefore,

If r is the radius of the loop, then

Given B = 0.16T and = 24mWb = 24 x 10^-3Wb. Therefore,

So the radius of the loop is 22cm.

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