Physics

Problem

An electric field of

300 \text{ V/m}

is confined to a circular area

10 \text{ cm}

in diameter. If the field is increasing at the rate of

20 \text{ V/m-s}

and if the magnitude of magnetic field at a point

15 \text{ cm}

from the center of the circle is

B \times 10^{-18} \text{ T}

, find value of

B

. A. 1 B. 2 C. 3 D. None