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An electric heater consumes electrical energy at a rate of P = 350 W, when connected to a battery with an emf of 120 V.

(a) What is the current in the heater?

(b) If you wish to increase the power consumption to 700 W, by what factor should the heater resistance be changed?

Rfinal

Rinitial =

(c) What is the maximum power that could be drawn if the circuit contained a circuit breaker that limited the current to no more than 5 A?

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Category:- Physics
Reference No.:- M9910103

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