a geyser is rated 1500 W and 250 V , this geyser is connected to 250 V mains, calculate (i) the current drawn (ii) the energy consumed in 50 hrs and (iii) the cost of energy consumes at rupee, 4.20 per Khw.
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Answer :-
6A
75 KWH
Rs.315
Explanation :-
Given :
Power (P) = 1500 W
Voltage (V) = 250 V
Time (T) = 50 hours
Cost of energy = Rs.4.20/KWH
To find :
Current (I)
Energy/Work (W)
Cost of energy
Solution :
P = VI
1500 = 250 × I
I = 1500/250
I = 6 A
________________________________
W = PT
W = 1500 × 50
W = 1500/1000 × 50
W = 75 KWH
________________________________
Cost of energy = W × Cost per KWH
Cost of energy = 75 × 420/100
Cost of energy = Rs.315
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