Flag Electric Current> A water heater is marked 1500W, 220V. If ...
question mark

A water heater is marked 1500W, 220V. If the voltage drops to 180V,calculate the power consumed by the heater.P1=V1I, 1500=220*I Hence I=150/22..............................(1)P2= V2i P2=180*150/22 from (1)Hence P2 =1227.27 W(or)P1=V1I, P1=V12/R..................(1)P2=V2I,P2=V22/R....................(2)P1/P2=V12/ V22P2=P1*V22/V12P2=1500*(180)2/(220)2P2=1004.13WWHICH OF THE ABOVE METHODS ARE CORRECT AND WHY?? CAN U PLEASE EXPLAIN???

Amit Saxena , 11 Years ago
Grade upto college level
anser 0 Answers

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...