An electric heater draws 10A when connected to a 115V outlet. How much energy does the...
An electric heater draws 10A when connected to a 115V outlet. How much energy does the heater consume over a period of 6 hours and If the utility company charges 10 cents for each KWatt-hour, how much, in dollars, should be paid to the company in 1 month?
Homework Answers
Finally $20.7 dollars will be paid to the
company as per electric heater consumption
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An electric heater draws 10A when connected to a 115V outlet.
How much energy does the...
Part A : The resistance of an electric heater is 90 Ω when connected to 120...
Part A : The resistance of an electric heater is 90 Ω when connected to 120 V. How much energy does it use during 15 min of operation? (answer in J) Part B : The lightbulb used in a computer projector has a resistance of 71 Ω. What is the current through the bulb when it is operating on 120 V? ( answer in A )
In electric heating coil will consume 6.0 x 10- W of power when it is connected...
In electric heating coil will consume 6.0 x 10- W of power when it is connected to a 120V outlet. A greenhouse operator has two such coils, and she wants to construct a single heater using the two coils to keep her small greenhouse at a temperature of 50.0°C during the winter months. For how many hours must this heater (two coils) operate per day if an average of 1.5x10') of energy are required each winter day to maintain the...
A 210-V clothes dryer draws a current of 20 A. How much energy in kilojoules does...
A 210-V clothes dryer draws a current of 20 A. How much energy in kilojoules does it use in 1.8 hour(s) of operation? (don't forget to convert hours to seconds, and do not input commas in your answer!)
A 110-V electric iron draws 3.0 A of current. How much thermal energy is developed each...
A 110-V electric iron draws 3.0 A of current. How much thermal energy is developed each hour?
How much energy in kWh would a heater rated at 7 kW use when run for...
How much energy in kWh would a heater rated at 7 kW use when run for 9000 seconds? If the cost of electricity is 1.4 $/kWh, how much does it cost to run the heating system for 9000 seconds ?
How much energy in kWh would a heater rated at 7 kW use when run for...
How much energy in kWh would a heater rated at 7 kW use when run for 9000 seconds? If the cost of electricity is 1.4 $/kWh, how much does it cost to run the heating system for 9000 seconds?
How much energy in kWh would a heater rated at 9 kW use when run for...
How much energy in kWh would a heater rated at 9 kW use when run for 300 minutes? If the cost of electricity is 1.2 $/kWh, how much does it cost to run the heating system for 300 minutes.
A 140 W lightbulb is plugged into a standard 12D V outlet. (a) How much does...
A 140 W lightbulb is plugged into a standard 12D V outlet. (a) How much does it cost in dollars per 31-day month to leave the light turned on continuously? Assume electrical energy costs US$ 0.07/kW middot h. (b) What is the resistance of the bulb? (c) What is the current in the bulb? (a) Number Units (b) Number Units (c) Number units
4. A flashlight uses two D cell 1.5 V batteries connected in serles to provide 3...
4. A flashlight uses two D cell 1.5 V batteries connected in serles to provide 3 volts cross ue ig bulb. The bulb draws 380 mA when turned on a. Calculate the resistance of the bulb b. Calculate the power dissipated c. If this flashlight was plugged into a wall (rather than using batteries) and we could keep the voltage and power the same. How much money would it cost to run the flashlight for one month (30 days) for...
If electrical energy costs 12 cents, or $0.12, per kilowate hour, how much does it cost...
If electrical energy costs 12 cents, or $0.12, per kilowate hour, how much does it cost to (a) burn a 100-W lightbulb for 24 h? (b) Operate an electric oven for 5.0 hifit carries a current of 20.0 A at 220 V?
In electric heating coil will consume 6.0 x 10- W of power when it is connected to a 120V outlet. A greenhouse operator has two such coils, and she wants to construct a single heater using the two coils to keep her small greenhouse at a temperature of 50.0°C during the winter months. For how many hours must this heater (two coils) operate per day if an average of 1.5x10') of energy are required each winter day to maintain the...
How much energy in kWh would a heater rated at 7 kW use when run for 9000 seconds? If the cost of electricity is 1.4 $/kWh, how much does it cost to run the heating system for 9000 seconds?
A 140 W lightbulb is plugged into a standard 12D V outlet. (a) How much does it cost in dollars per 31-day month to leave the light turned on continuously? Assume electrical energy costs US$ 0.07/kW middot h. (b) What is the resistance of the bulb? (c) What is the current in the bulb? (a) Number Units (b) Number Units (c) Number units
4. A flashlight uses two D cell 1.5 V batteries connected in serles to provide 3 volts cross ue ig bulb. The bulb draws 380 mA when turned on a. Calculate the resistance of the bulb b. Calculate the power dissipated c. If this flashlight was plugged into a wall (rather than using batteries) and we could keep the voltage and power the same. How much money would it cost to run the flashlight for one month (30 days) for...
If electrical energy costs 12 cents, or $0.12, per kilowate hour, how much does it cost to (a) burn a 100-W lightbulb for 24 h? (b) Operate an electric oven for 5.0 hifit carries a current of 20.0 A at 220 V?
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