a circuit has line of 5ampere.how many lamps of rating 40 watt and 220 volt can simultaneously run on line safely. please solve question don't give website
Answers
Answered by
1
we. know. that
R=V/I
R=220/5
R=44ohms
but
P=VI
or
P=V2/R
40 =220×220/R
40R=220×220
R=. 22×55
no of. resisters=22×55/40
=121/8
R=V/I
R=220/5
R=44ohms
but
P=VI
or
P=V2/R
40 =220×220/R
40R=220×220
R=. 22×55
no of. resisters=22×55/40
=121/8
Similar questions