Question

In a house 11 bulbs are connected in parallel.each bulb takes a current of 0.1A from 220 V power supply.calculate tbe rssistance of all tbe bulbs and curremt in the leads.​

Answer 1

Answer:

Let R' be the resistance for 1 bulb

R'= V/I

R'= 220/0.1

R'= 2200Ω

Resistance for 11 bulbs, R= 11*1/R'

                                         = 11*1/2200

                                         = 11/2200

                                         = 200Ω

Total Current, I'= 11*I

                          = 1.1A