Question

8.
An electric iron uses a power of 1320W when set to higher temperature. If set to lower temperature
one third of higher temperature current is used. If iron is connected to a potential of 220V, then
power used to lower temperature is
(1) 220 W
(2) 440 W
(3) 660 W
(4) 880 W​

Answer 1

Answer:

2nd one is correct that is 440W

Explanation:

given that,

an electric iron at higher temperature uses a power of 1320 W and PD=220V

then, current=power/volt

i=1320/220

i=6 A

now,

an electric iron is at lower temperature uses 1/3rd

of higher temperature current.

new current =1/3*6=2A and voltage=220 V

then the new power=V*I

P=220*2

P=440W

IF YOU LIKE MY ANSWER THEN YOU HAVE TO FOLLOW ME AND PLEASE MAKE ME BRAINLIEST..