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3 November, 06:09

A 2-way light bulb for a 110 V lamp has filament that uses power at a rate of 50.0 W. What is the resistance of the filament?

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  1. 3 November, 09:47
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    Answer:r=242ohms

    Explanation:

    Power (p) = 50w

    Volt (v) = 110v

    Resistance (r) = ?

    Power (p) = ((volt) ^2) / (resistance (r))

    50=110^2/r

    Cross product

    50xr=110^2

    50r=12100

    r=12100/50

    r=242ohms
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