A light bulb is rated at $100 W$ for a $220 V$ supply. Find the resistance of the bulb:

184 Ω

No worries! We‘ve got your back. Try BYJU‘S free classes today!

284 Ω

No worries! We‘ve got your back. Try BYJU‘S free classes today!

384 Ω

No worries! We‘ve got your back. Try BYJU‘S free classes today!

484 Ω

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct option is D $484 Ω$
$A n s w e r : -$ D
Power is given by:
$P = \frac{V^{2}}{R} 100 = \frac{(220)^{2}}{R} R = 484 Ω$

Suggest Corrections

Similar questions

100 W

220 V

100 W

220 V

100 W

220 V

50 H z

An electric bulb is marked 220V-100W. The bulb is connected to a 220V supply. Calculate

a) the resistance of the filament.

b) current flowing through the filament.

A light bulb is rated at 125 W for a 250 V a.c., supply.
Calculate the resistance of the bulb.

Join BYJU'S Learning Program