Plane figures made of thin wires of resistance `R=50` milliohm//metre are located in a uniform magnetic field perpendicular into the plane of the figures and which decrease at the rate `dB//dt=0.1 mT//s`. Then currents in the inner and outer boundary are. (The inner radius `a=10 cm` and outer radius `b=20cm)`

Options

A. `10^(-4)` (Clockwise), `2 xx 10^(-4)A` (Clockwise)
B. `10^(-4)A` (Anticlockwise), `2 xx 10^(-4) A` (Clockwise)
C. `2 xx 10^(-4) A` (clockwise), `10^(-4)A` (Anticlockwise)
D. `2 xx 10^(-4)A` (Anticlockwise), `10^(-4)A` (Anticlockwise)

Answer

A