The Nichrome Heating Element in an Electric Drier Operates on 240

question 46

Multiple Choice

The nichrome heating element in an electric drier operates on 240 V and generates heat at the rate of 2.0 kW. The heating element shorts out and, in repairing it, the repairman shortens the
Nichrome wire by 10%. (Assume the temperature is unchanged. In reality, the resistivity of the
Wire will depend on its temperature.) What effect will the repair have on the power dissipated in
The heating element?

• A) The power is still 2.0 kW.
• B) The power decreases to 1.8 kW.
• C) The power increases to 2.2 kW.
• D) None of the given answers is correct.

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