Question: Q 2 0 . A heater element with potential difference of 4 0 0 V across it transfers electrical energy to thermal energy at the

Q20.
A heater element with potential difference of 400 V across it transfers electrical energy to thermal energy at the rate of 3000 W . At what rate the heater will transfer the energy if it is connected across a potential difference 300 V .
A)169 kW
Q 2 0 . A heater element with potential

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