Question

An electric toaster has a power rating of 200W. It operates for 1 hr in the morning and 1hr in the evening. How much does it cost to operate the toaster for 10 days at Rs 5 per kWh​

Answer 1

Answer:

Power P=V×i=110×8=880W

energy consumed in 2 hour E=880×2×3600J

1KwH=3.6×10

6

J

Total unit consumed unit=

1KwH

E

=

3.6×10

6

880×2×3600

=1.76Kwh

So cost of 1.76 Kwh is c=1.76×2.5=4.40