A Circular Coil of Radius R = 5 Cm and Resistance

Multiple Choice

A circular coil of radius r = 5 cm and resistance R = 0.2 Ω is placed in a uniform magnetic field perpendicular to the plane of the coil. The magnitude of the field changes with time according to B = 0.5 e^-0.2t T. What is the magnitude of the current induced in the coil at the time t = 2 s?

A) 1.3 mA
B) 9.2 mA
C) 7.5 mA
D) 4.2 mA
E) 2.6 mA