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 | SaraNextGen Top Answer
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 |
1 Answer
127 votes
Answer Key / Explanation : (b) -
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(b) We know, Let,
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initial number of turns
resistance of the coil
Constant
14.4 min.127 votes
Answer Link
127