Uniform electric field in Figure a uniform electric field is directed out of the page within a

Question:

Uniform electric field in Figure a uniform electric field is directed out of the page within a circular region of radius R = 3.00 cm. The magnitude of the electric field is given by E = (4.50 x 10-3 V/m ?? s) t, where t is in seconds. What is the magnitude of the induced magnetic field at radial distances?

(a) 2.00 cm and

(b) 5.00 cm