An electric bulb of 60 Watts 250 volts is connected to a
source of 250 V a.c. mains. The bulb is burned for 100 days
at the rate of 5 hours per day. What is the total cost of
electricity consumed if the cost of one unit is Rs.2?

1 Rs.10

2 Rs.30

3 Rs.60

4 Rs.100

Answer Posted / guest

(3) Rs.60

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