Q. A solar panel works by allowing photons, or particles of light, to knock __ free from atoms, generating a flow of electricity.

A
Protons
B
Neutrons
C
Electrons
D
None of these
Solution:

A solar panel works by allowing photons, or particles of light, to knock electrons free from atoms, generating a flow of electricity. Solar panels actually comprise many, smaller units called photovoltaic cells. … To work, photovoltaic cells need to establish an electric field.

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