Question

duvile!
2. Amit visited his friend Rohit's residence. Rohit pressed
a switch and a large number of bulbs were switched
on. Amit advised Rohit to switch off the bulbs and
use few LED bulbs instead.
a. Why all the bulbs were switched on by pressing
one switch?
b. Why did Amit ask Rohit to switch off the bulbs
and use LED bulbs instead?​

Answer 1

ANS b : BKS an LED bulb in common consumes a less amout of electricity then an normal bulb

Answer 2

(a)ans... because all the bulbs were connected to one switch

(b)ans... because LED bulbs consumes a less amount of electricity as compared to the normal bulbs