for same potential difference out of two a room heater 1000W an electric motor 2kw which has greater resistance? so how
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P=V²/R
V1=V2=V
R1=R1
R2=R2
P1=V²/R1
R1=V²/P1
=V2/1000
P2=V²/R2
R2=V²/P2
=V²/2000
R1/R2=V²/1000/V²/2000
=2
R1=2R2
therefore R1 has higher resistance
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