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A 60 W light bulb has a resistance of 880 Ω

Calculate the CURRENT.
Write your answer in Amps to TWO SIGNIFICANT FIGURES

User Keshava GN
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1 Answer

10 votes


\bf{ \underline{Given:- }}


\sf{• \: Power \: (P) = 60 \: w}


\sf{• \: Resistance \: (R) = 880 \: Ω}


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\bf{ \underline{To \:  Find :- }}


\sf• \: The \: Current \: (I).


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\huge\bf{ \underline{ Solution :- }}


\sf We \: know \: that,


\bf \red {\bigstar{ \: P = I^(2) R}}


\rightarrow \sf 60 = I^(2) * 880


\rightarrow \sf (60)/(880) = I^(2)


\rightarrow \sf I^(2) = 0.0681


\rightarrow \sf I = √(0.0681)


\rightarrow \sf I = 0.261 \: \: (approx.)


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\bf The \: \: value \: \: of \: \: I \: \: is \: \: 0.261 \: \: Amps. \: \: (approx.)

User Paul Smith
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