Last Updated On [03-11-2023]
An electric kettle boils some water in 16 min. Due to some defect, it becomes necessary to remove 10% turns of heating coil of the kettle. Now, how much time will it take to boil the same of water?
a)
17.7 min
b)
14.4 min
c)
20.9 min
d)
13.7 min
An electric kettle boils some water in 16 min. Due to some defect, it becomes necessary to remove 10% turns of heating coil of the kettle. Now, how much time will it take to boil the same of water?
a)
17.7 min
b)
14.4 min
c)
20.9 min
d)
13.7 min
Question ID - 151705 :-
An electric kettle boils some water in 16 min. Due to some defect, it becomes necessary to remove 10% turns of heating coil of the kettle. Now, how much time will it take to boil the same of water?
a)
17.7 min
b)
14.4 min
c)
20.9 min
d)
13.7 min
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An electric kettle boils some water in 16 min. Due to some defect, it becomes necessary to remove 10% turns of heating coil of the kettle. Now, how much time will it take to boil the same of water? |
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a) |
17.7 min |
b) |
14.4 min |
c) |
20.9 min |
d) |
13.7 min |
|
(b) We know, Let,
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initial number of turns
resistance of the coil
Constant
14.4 min.Next Question :
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A rod of a certain metal is 1.0 m long and 0.6 cm in diameter. Its resistance is |
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a) |
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b) |
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c) |
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d) |
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Another disc made of the same metal is 2.0 cm in diameter and 1.0 mm thick. What is the resistance between the round faces of the disc?
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