A flexible wire loop in the shape of a circle has a radius that grows linearly with time. There is a magnetic field perpendicular to the plane of the loop that has a magnitude inversely proportional to the radius of the loop, B(r)∝1r. How does the e.m.f, ϵ vary with time?

A flexible wire loop in the shape of a circle has a radius that grows

1.	A flexible wire loop in the shape of a circle has a radius that grows linearly with time. There is a magnetic field perpendicular to the plane of the loop that has a magnitude inversely proportional to the radius of the loop, B(r)∝1r. How does the e.m.f, ϵ vary with time?
Answer» A flexible wire loop in the shape of a circle has a radius that grows linearly with time. There is a magnetic field perpendicular to the plane of the loop that has a magnitude inversely proportional to the radius of the loop, $B (r) \propto \frac{1}{r}$ . How does the e.m.f, $ϵ$ vary with time?

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A flexible wire loop in the shape of a circle has a radius that grows linearly with time. There is a magnetic field perpendicular to the plane of the loop that has a magnitude inversely proportional to the radius of the loop, B(r)∝1r. How does the e.m.f, ϵ vary with time?

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