MyQuestionIcon

1

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

Electric Power

An electric b...

Question

An electric bulb is rated at 220 V, 100 W. What is its resistance?

Open in App

Solution

Given V = 220 V and P = 100 W

We know that power, P = IV = V² / R
R = V² / P

R = $\frac{220 \times 220}{100}$
R = 484 Ώ

Suggest Corrections

thumbs-up

9

Similar questions

Q. A light bulb is rated at

100 W

220 V

supply. Find the resistance of the bulb:

Q. A light bulb is rated at

100 W

220 V

a.c supply. Calculate the resistance of the bulb.

Q. An electric bulb is rated

200 V - 100 W

. Find the resistance of the bulb.

An electric bulb is rated 220 V and 100 W . When it is operated on 110 V , what will be the power consumed ??

Q. A servo voltage stabiliser restricts the voltage output to 220 V ± 1%. If an electric bulb rated at 220 V, 100 W is connected to it, what will be the minimum and maximum power consumed by it?

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Powerful Current

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard X Physics

Join BYJU'S Learning Program

CrossIcon