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franklin
franklin asked in Science & MathematicsPhysics · 6 years ago

a four ohm resistor with an IR drop of 12 volts uses _____ watts power?

1 Answer

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    Lv 6
    6 years ago

    4 ohm and 12 V drop => I = 12/4 = 3 A

    Power = R* I^2

    Power = 4 * 3^2 = 36 W

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