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AIEEE 2003 Physics Solved Paper
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Section:
Physics
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© examsnet.com
Question : 48
Total: 74
A 220 volt, 1000 watt bulb is connected across a 110 volt mains supply. The power consumed will be
[AIEEE 2003]
750 watt
500 watt
250 watt
1000 watt
Validate
Solution:
We know that
R
=
‌
V
‌
ruted
‌
2
P
‌
rated
‌
=
‌
(
220
)
2
1000
When this bulb is connected to 110 volt mains supply we get
P
=
‌
V
2
R
=
‌
(
110
)
2
×
1000
(
220
)
2
=
‌
1000
4
=
250
W
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