The source of electrons lighting common lamps in your classroom is
1) the power company,
2) the electrical outlet,
3) atoms in the lamp filament,
4) the wires leading to the lamp,
whereas the source of energy that lights a common lamp in your home is
5) the power company.
6) the electrical outlet.
7) atoms in the bulb filament.
8) the wires leading to the lamp.
Answer: 3, 5
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