A coil of area and turns is in a magnetic field directed perpendicular to its plane…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

A coil of area

10\,\text{cm}^2

and

10

turns is in a magnetic field directed perpendicular to its plane and changing at a rate of

10^8\,\text{gauss/s}

. The resistance of the coil is

20\,\Omega

. The current in the coil will be (a)

0.5\,\text{A}

(b)

5\times10^{-3}\,\text{A}

(c)

0.05\,\text{A}

(d)

5\,\text{A}