you have 2 electric lamps having rating 40W, 220V and 60W, 220V . which of the 2 has a higher resistance. Explain with steps
Answers
Answered by
104
Power is inversely proportional to resistance. therefore, lesser the power, more is the resistance. so, electric lamp having 40W ,220V has higher risistance.
P=V square/R
40=48400/R
48400/40=R
R=1210 OHM
P=V square /R
R=48400/60
R=806.6 OHM
Therefore,electric lamp having 40W, 220V has a higher resistance.
P=V square/R
40=48400/R
48400/40=R
R=1210 OHM
P=V square /R
R=48400/60
R=806.6 OHM
Therefore,electric lamp having 40W, 220V has a higher resistance.
pranjal7:
it is correct ans
it was a mistake
that i made
what?
you made?
it is the correct answer
yes...its correct
and i made him brainliest
sry
and thanks 4 ur answer
Answered by
25
Power is inversely proportional to resistance. therefore, lesser the power, more is the resistance. so, electric lamp having 40W ,220V has higher resistance.
P=V²/R
R=V²/P
R=(220)²/40
48400/40=R
R=1210Ω
P=V² /R
R=V²/P
R=48400/60
R=806.6Ω
Therefore,electric lamp having 40W, 220V has a higher resistance
Hope it helps you
THANK YOU
Similar questions