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Water boils in an electric kettle in 15 ...

Water boils in an electric kettle in 15 minutes after switching on. If the length of the heating wire is decreased to `2//3` of its initial value, then the same amount of water will with the supply voltage in

A

15 minutes

B

12 minutes

C

10 minutes

D

8 minutes

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The correct Answer is:
C
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CENGAGE PHYSICS-HEATING EFFECT OF CURRENT-Thermal Power in Resistance Connected in Circuit
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