Question

two lamp rated 100w 220V and the other rated 60W 220V are connected in parrel to electric main supply.Find the current draw by tge two bulbs from the line if the supply voltage is 220v

Answer 1

in this

P1=100 W , V = 220 V , P2= 60 W (GIVEN)

I1 = ? I2 = ?

P1= VI1

. : I1=P1/ V

= 100/220 = 0.46A

SIMILIARLY ,

I2=P2/ V = 60/220

= 0.27A

TOTAL CURRENT (I) = I1 + I2

= 0.46 + 0.27

= 0.73A

Answer 2

p =v/i
i =p/v
=100/220
0.45,,
i=p/v
60/220
0.5,,
now add both the i
answer is 0.95