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If the length of the filament of a heate...

If the length of the filament of a heater is reduced by `10%`, the power of the heater will

A

increase by about 9%

B

increase by about 11%

C

increase by about 19%

D

decrease by about 10%

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