NDA 2019 Physics question
Water is heated with a coil of resistance R connected to domestic supply. The rise of temperature of water will depend on 1. Supply voltage. 2. Current passing through the coil. 3. Time for which voltage is supplied. Select the correct answer from among the following :
Answer: (A)
Solution
The heat produced in the coil is . It depends on the supply voltage, the current through the
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