There are two bulbs (1) marked 60 W,220V & (2) marked 100W,220V. Which one of the two has a higher resistance ?
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Answered by
1
This clearly indicates 100 w bulb glows more.
Here I1=P/v = 100/220 = 0.45 ohms
and I2 = p/v = 60/220 = 0.27 ohms
Here I1=P/v = 100/220 = 0.45 ohms
and I2 = p/v = 60/220 = 0.27 ohms
Answered by
2
HEYA
WE know that - power is given by V²/R
1) P = 100W
V = 220 V
so use the formula here
P = V²/R
from here R = V²/P
plug in the values of V and P
we get R = (220)²/100
=> R =
WE know that - power is given by V²/R
1) P = 100W
V = 220 V
so use the formula here
P = V²/R
from here R = V²/P
plug in the values of V and P
we get R = (220)²/100
=> R =
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