Question

A lamp consumes 100 joule of electric energy in 5 seconds and 475 joules of energy in 25 seconds.what is its average power

Answer 1

Explanation:

Given,

In 5 secs= 100 joule of energy consumed

In 25 secs= 475 joule of energy consumed

So, P1= 100/5 =20 Watt

and P2= 475/25 = 19 Watt

Hence,

Average power= 20+19/2

= 39/2

= 19.5 Watt

So, 19.5 Watt is your answer...you can say me thank you