MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Watt Hour Meter

Question 3A l...

Question

Question 3
A lamp consumes 1000 J of electrical energy in 10 s. What is its power?

Open in App

Solution

$P o w e r = \frac{W o r k}{T i m e}$
Work done = Energy consumed by the lamp $= 1000 J$
Time $= 10 s$
$P o w e r = \frac{1000}{10} = 100 J s^{- 1} = 100 W$

Suggest Corrections

thumbs-up

23

Similar questions

Q. Question 3
A lamp consumes 1000 J of electrical energy in 10 s. What is its power?

Q. Define the SI unit of power. A lamp consumes 1200 J of electrical energy in a minute. What is its power?

Q. Power of a lamp is

60 W

. Find the energy in joules consumed by it in

1 s

Q. A lamp emits monochromatic green light uniformly in all directions. The lamp is 3% efficient in converting electrical power to electromagnetic waves and consumes 100W of power. The amplitude of the electric field associated with the electromagnetic radiation at a distance of 10m from the lamp will be

Q. A lamp emits monochromatic green light uniformly in all directions. The lamp is

3

% efficient in coverting electrical power to electromagnetic waves and consumes

100 W

of power. The amplitude of the electric field associated with the electromagnetic radiation at a distance of

10 m

from the lamp will be

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

PHYSICS

Watch in App

explore_more_icon

Explore more

Watt Hour Meter

Standard X Physics

Join BYJU'S Learning Program

CrossIcon