How much does it cost to run a 240V dryer with 10Ω of resistance for 45 minutes if electricity costs 20 cents per kWh? Express your answer in dollars.
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How much does it cost to run a 240V dryer with 10Ω of resistance for 45 minutes if electricity costs 20 cents per kWh? Express your answer in dollars.
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- The voltmeter V reads 3.11V, when switch S is open . When the switch is closed, the voltmeter reading drops to 2.88 , and the ammeter A reads 1.61. Assume that the two meters are ideal, so they don't affect the circuit. Find the internal resistance of the battery. 2.34 ohm 0.98ohm 0.14 ohm 0.52ohm 1.23ohmA 12 volt car battery is being used to power a circuit with a total resistance of 0.5 Mega-ohm. a) What is the power (in watts) being used by this circuit? b) The circuit is switched on for exactly 27.3 days and then switched off. How much energy has the circuit used (in joules AND kilowatt-hours) in this time? c) If the current rate of hydro use is 10.1 cents per kilowatt-hour, how much would the use of this circuit contribute to your hydro bill (assuming that no other charges apply)?The resistance of an electric heater is 90 Ω when connected to 120 V. How much energy does it use during 20 min of operation?
- Four identical filaments are connected together in series inside a decorative light bulb. Each filament has a resistance of 2.30 Ohms. When the very bright light is on, a current of 7.55 A passes through the bulb. What is the total power dissipated in Watts?helpWhat is the effective resistance of a car's starter motor when 150 A flows through it as the car battery applies 11.0 V to the motor?
- Two resistors are connected in series with an 15.19 volt battery. The resistors have values of R1 = 1.41 ohms and R2 = 6.28 ohms. What is the current (in amps) in this circuit? Round your answer to two decimal places.What is the output voltage (in V) of a 3.0000 V lithium cell in a digital wristwatch that draws 0.340 mA, if the cell's internal resistance is 1.90 Ω?The resistance of an electric heater is 90 Ω when connected to 120 V. How much energy does it use during 50 min of operation?
- In an experiment on muscle a voltage of 6.64 V is applied, resulting in a current of 57.1 mA. What is the resistance of this muscle, in Ω? What voltage is needed to supply 593 mW of power to a 2.64 kΩ resistor?A circuit with a battery, a 4 Ω resistor, a 15 Ω resistor, and a 22 Ω resistor in series. The total current is the system is 9.6 A. What is the voltage of the battery?