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8 August, 18:59

What is the current through a 11v bulb with a power of 99w

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  1. 8 August, 21:31
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    9.01amp

    Explanation:

    Power = V^2/R

    Given that v = 11volts, P = 99watts

    99 = 11^2/R

    11*11 = 99R

    121 = 99R

    R = 121/99

    R = 1.22ohms

    From ohms Law; V = IR

    11volts = I * 1.22ohms

    I = 11/1.23

    I = 9.01 amp
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