Gud morning.
An electric bulb is rated 150 V and 100 W. When it is operated on 300 V, the power consumed will be : (a) 100 W (b) 75 W (c) 50 W (d) 25 W.
Explain???
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Gud morning.
An electric bulb is rated 150 V and 100 W. When it is operated on 300 V, the power consumed will be : (a) 100 W (b) 75 W (c) 50 W (d) 25 W.
Explain???
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Answer:
good morning
Given
An electric bulb is rated 220V and 100W
Find out
Power consumed when it is operated on 110 V
Solution
As per the equation P = V²/R
we have If V = 220 V
100 W = 2202/R
2/100 Q = 484 Q. This is the resistance of the
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When V = 110 V, power consumed = V²/R = 110²/484
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power is consumed when it is operated on
ANSWERS:
Given:
An electric bulb is rated 220V and 100W
[tex] \\ [/tex]
Find out:
Power consumed when it is operated on 110 V
[tex] \\ [/tex]
Solution:
As per the equation P = V2/R
we have If V = 220 V
100 W = 2202/R
R = 2202/100 Ω = 484 Ω. This is the resistance of the bulb.
When V = 110 V, power consumed = V2/R = 1102/484 = 25 W.
So, 25 W power is consumed when it is operated on 110 V.
[tex] \\ [/tex]
HOPE IT IS HELPFUL FOR YOU.