When an electron in an atom moves from a lower energy level to a higher one, a ______________ is ______________.
a. photon; emitted
b. proton; emitted
c. photon; absorbed
d. proton; absorbed
Question 2
A coil is wrapped with 300 turns of wire on the perimeter of a square frame (side length = 20 cm). Each turn has the same area as the frame, and the total resistance of the coil is 1.5 . A uniform magnetic field perpendicular to the plane of the coil changes in magnitude at a constant rate from 0.50 T to 0.90 T in 2.0 s. What is the magnitude of the induced emf in the coil while the field is changing?
a. 2.4 V
b. 1.6 V
c. 3.2 V
d. 4.0 V
e. 8.4 V