A electric fan and a heater both are marked 100w, 220v. the resustance of the heater is
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p=v^2÷R
R=v^2÷P
--R=220×220÷100
== 484ohm
R=v^2÷P
--R=220×220÷100
== 484ohm
Answered by
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P=100W , V = 220V , R = resistance = ?
we know that
P= V^2/ R
therefore R = V^2/P
putting values we get R= 220 ×220/100 = 484ohm
we know that
P= V^2/ R
therefore R = V^2/P
putting values we get R= 220 ×220/100 = 484ohm
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