Question

question 7 of 10
which event in a solar cell uses the photoelectric effect?
a. electromagnetic waves strike a semiconductor, removing some of its electrons, which form a current.
b. electromagnetic waves act according to the wave model of light, not the particle model.
c. electromagnetic waves remove electrons from the transparent glass on the top of the cell.
d. electrons flow from the negatively charged semiconductor to the positively charged one.

Explanation:

The photoelectric effect involves photons (electromagnetic waves as particles) hitting a material (here, a semiconductor) and ejecting electrons. These electrons then form a current. Option B is incorrect as the photoelectric effect supports the particle model of light. Option C is wrong because the photoelectric effect occurs in the semiconductor, not the transparent glass. Option D describes electron flow due to charge difference (a general electrical phenomenon) not specifically the photoelectric effect.

Answer:

A. Electromagnetic waves strike a semiconductor, removing some of its electrons, which form a current.