Question

How much energy does a 100 W electric bulb transfer in 1 minute. Options A 100 j.B 800 j. C 3600 j. D 6000 j.

Answer 1

1 watt = joule/sec
given w= 100
t= 1m
=1*60 = 60sec
now
joule= watt*time
=100*60
=6000
answer is D

Answer 2

6000 joule energy is transferred by 100 W electric bulb in 1 minute.

Solution:

The electric bulb with power transfer an amount of energy as calculated as follows,

Given: Power of the electric bulb = 100 W

Time t = 1 minute = 60 seconds

We know that, Power =$\bold{\frac{\text {Work done}}{\text {time}}}$

$\begin{array}{l}{P=\frac{W}{t}} \\ {W=P \times t}\end{array}$

W=$100 \times 60$

W = 6000 J

Energy is the ability to do work. Hence, work done is the energy.

W = E = 6000 J