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4 May, 00:39

A 12 volt car battery is connected to a 3 ohm brake light. What is the current carrying energy to the lights?

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  1. 4 May, 00:41
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    4 A

    Explanation:

    V = IR, where V=voltage, I=current, R=resistance. This is Ohm's Law. (remember that for units V = volts, Ω = ohms, A = amperes.)

    V = IR

    12 V = I * 3 Ω

    12/3 = I

    I = 4 A
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