Question

Two electric bulb of 100w and 60w are connected by a 200V power line. They are lit for 5 hours a day. So if the rate of electricity consumption for 30 days of electric energy is Rs. 6 per unit. Then calculate the bill amount. ​

Answer 1

Answer:

0.5 units

Explanation:

Here, power of the electric bulb, P=100W=0.1kWP=100W=0.1kW

time for which bulb is used, t=5ht=5h

As P=Wt,W=PtP=Wt,W=Pt

Energy consumed by the bulb, W=Pt=0.1kW(5h)=0.5kWh=0.5units