Question

A heater draws 1100W at 220V. Find the resistance of the heater.Calculate the kilowatt hours consumed in a week if the heater is used daily for 4 hours at the rated voltage

Answer 1

Hey mate, here is your answer =>

P= 1100W
V= 220V
I=?
R=?

P=V×I
1100=220×I
1100/220= I
I= 5A

V=IR
220=5×R
220/5=R
R=44 Ohm

No. of hours heater is used in a week= 4×7
=28 hours
Energy consumed in 28 hours= 1100×28
= 30,800WattHours
Changing unit to Kilowatt Hour= 30,800/1000
=30.8 KWh

✌️Hope it helps. PLEASE MARK AS BRAINLIEST✌️

Answer 2

Answer:

heres your ans

Explanation:

ANS:--  P= 1100W                          V= 220V

                                I=?                                        R=?

(a)P=V×I

1100=220×I

1100/220= I

I= 5A

                                         V=IR

220=5×R                                

220/5=R                 R=44 Ω.                      

(b)No. of hours heater is used in a week= 4×7

=28 hours

Energy consumed in 28 hours= 1100×28

= 30,800WattHours

Changing unit to Kilowatt Hour= 30,800/1000

=30.8 KWh

PLZ MARK THE BRAINLIEST