A long solenoid has a diameter of 13.2 cm. When a current i exists in its windings, a uniform magnetic field of magnitude B = 28.1 mT is produced in its interior. By decreasing i, the field is caused to decrease at the rate of 5.92 mT/s. Calculate the magnitude of the induced electric field (a) 4.23 cm and (b) 9.63 cm from the axis of the solenoid.

A long solenoid has a diameter of 13.2 cm. When a current i exists in its windings, a uniform magnetic field of magnitude B = 28.1 mT is produced in its interior. By decreasing i, the field is caused to decrease at the rate of 5.92 mT/s. Calculate the magnitude of the induced electric field (a) 4.23 cm and (b) 9.63 cm from the axis of the solenoid.