Do i waste alot of energy?

Question

if i am using one 40watt lightbulb for my lamp 8 hours a day at the most will i waste alot of energy

if our bill is 200 dollars how much more will it be with the bulb

Answer 1

$1.00

40 watts * 8 hrs/day * 31 days = 9.92 kWh

at $0.10/kWh (high estimate) = $0.992 + tax