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Vocal Guru
Vocal Guru asked in Science & MathematicsPhysics · 1 decade ago

How long does it take for 100 million electrons to pass through a TV connected to a 120-V outlet consumes 75 W?

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  • billrussell42
    Lv 7
    1 decade ago
    Favorite Answer

    current = 75/120 = 0.625 amps

    0.625 amps = 0.625 coulombs/s

    1 C = 6.242e18 electrons

    therefore

    0.625 coulombs/s x 6.242e18 electrons/C = 3.9e18 electrons/s

    1e8 electrons / 3.9e18 electrons/s = 2.56e-11 seconds = 25.6 ps

    .

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