An electric heater is operated by applying a voltage of 50.0V across a nichrome wire with a total resistance of 8.002. Find the current in the wire and the power rating of the heater.
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- Two resistors, 60.1 and 68.1N, are connected in parallel. The current through the 68.1-2 resistor is 3.58A. (a) Determine the current in the other resistor. (b) What is the total power supplied to the two resistors?A portable coffee heater supplies a potential difference of 12.0 V across a Nichrome heating element with a resistance of 1.92 Ω. (a) Calculate the power (in W) consumed by the heater. W (b) How many minutes would it take to heat 1.13 kg of coffee from 20.6°C to 46.2°C with this heater? Coffee has a specific heat of 4184 J (kg · °C) . Neglect any energy losses to the environment. minCalculate the effective resistance (in kΩ) of a pocket calculator that has a 1.05 V battery and through which 0.225 mA flows.
- A battery having an emf of 9.68 V delivers 113 mA when connected to a 61.0 Ω load. Determine the internal resistance of the battery.Two resistors connected in series have an equivalent resistance of 620 Ω. When they are connected in parallel, their equivalent resistance is 122 Ω. Find the resistance of each resistor.An electric heater is constructed by applying a potential difference of 120 V to a Nichrome wire that has a total resistance of 8.00 N. Find the current carried by the wire and the power rating of the heater.