Question

A machine do a work of 100 joule in 20 second. What is its power?

(a) 20 watt
(b) 80 watt
(c) 5 watt
(d) 2000 watt​

Answer 1

Answer:

2000 watt

Explanation:

this is right answer

Answer 2

Answer :

• Option C) 5 watt ☑️

Given :

• Work done by the machine = 100 joules

• Time taken to do the work = 20 seconds

To Find :

• It's power ??

Solution :

As we know that,

• Power = Work/Time

So, here

• Work = 100 joules (J)
• Time = 20 seconds (s)

Putting the values,

➜ Power = Work/Time

➜ Power = 100/20

➜ Power = 5 J/s

∴ Hence, it's power is 5 watt.