Question

If an bulb of 100 watts is lighted for 2 hours daily how much electric energy would be consumed Also find the cost if cost per unit is ₹4

Answer 1

Answer:

Consumed Electrical Energy = Power × time

E = 100W × 2h = 200W-h

Cost = No of consumed E.Energy in Units × Rs.4 ( 1unit = I kilowatt × hour )

$= \frac{100}{1000} \times 2 \times 4 \\ = rs.0.1 \times 8 \\ rs.0.8 = 80paise$