Question

An electric bulb is rated 220 V - 100 W. It is used for 8 hours a day for a month of 30 days the electrical energy consumed is

Answer 1

Answer:

The total energy consumed after 1 month is 24 unit

Answer 2

86.4MJ

Explanation:

• We have a bulb which is rated 220 V - 100 W.It is also given that the bulb is being used for 8 hours a day for a month of 30 days.
• The relation we have for power,energy and time is

$P=\frac{W}{T}$

The total time calculated would be ,

$t=8*30*3600$

So by substituting we get,

$W=100*8*30*3600$

Here W is the workdone by the bulb which is equivalent to the energy taken by the bulb.

$E=86.4MJ$

Hence the total energy consumed is 86.4MJ.