Answers

2015-06-03T01:11:37+05:30
Given: 
R=8 
I=15A 
t=2Hr=2*3600s 

Heat developed in the heater=I^2R*t=15^2*8*t=225*8*2*3600=1.29... 
Rate of heat develped=Power=I^R=15^2*8=1800 W
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