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3 September, 23:50

A lightbulb has a resistance of 240 Ω when operating at a voltage of 120 V. What is the current through the lightbulb?

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  1. 4 September, 00:15
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    Answer: 0.5Amps

    Explanation:

    Voltage of light bulb = 120 volts

    Resistance = 240Ω

    Current, I = ?

    Now recall that voltage = current x resistance

    i. e V = I x Rtotal

    120volts = I x 240Ω

    I = 120 volts / 240Ω

    I = 0.5amperes

    Thus, there is 0.5 Amperes of current in the light bulb.
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