An electric water heater consumes 7.13 kW for 3.85 h per day. What is the cost (in dollars per year) of running it for one year if electricity costs 12.6 cents/(kW · h)?

Q: How much electrical energy in a second is consumed by a bulb that ha a power rating of 50 watts?…

A: The power rating of a bulb is given by P=50 watts

Q: A typical candy bar contains approximately 250kcal. How long would this power a 60 W lightbulb?

A: Convert kilo calorie to joule. E=250 kcal4184 J1 kcal=1.046×106 J The relation between power and…

Q: How much does it cost to run a refrigerator all day for 6 months (30 days/month) if it requires 3.5…

A: Power is defined as the rate at which the work is done per unit of time. Higher power means having a…

Q: A fan in an air conditioning unit rated at 250 WCome on for an average of 5.0 min at A time, a…

A: Power of fan = P = 250 W Average time fan is on at a time = t=5 min = 300 sec Number of times a day…

Q: How much does it cost to operate a 695W heater for exactly 30.0 min if electrical energy costs…

A: Given, Power, P = 695 W time, t = 30.0 min cost of electrical energy, C = $0.060 per kW.h

Q: person used his 15000 W air conditioning unit for 5 h every day during the month of June. How much…

A:

Q: The cost to operate a clothes dryer for a year is $80.25. If the rate for electrical energy is…

A:

Q: There are approximately 103 million TVs in the United States. Each uses, on average, 71 W of power…

A: Given: The number of TVs is 103 million. The average power used by each TV is 71 W. The number of…

Q: A person used his 1500 W air-conditioning unit for 5 h every day during the month of June. How much…

A: Given, A person used his 1500 W air-conditioning unit for 5 h every day during the month of June. In…

Q: How much does it cost to run a 1500-W hair dryer for 37 minutes each day for one month (30 days) at…

A:

Q: Determine the amount of electrical energy (in Kw•hr) used by the following devices when operated for…

A: (1) Power,  P=1500 W   =1.5 kW Time,  t=5 min=560=0.0833 hr

Q: A lamp consumes 1000 J of electrical energy in 10 s. What is its power? L00

A:

Q: A refrigerator using 1030 W runs two-thirds of the time. How much does the electricity cost to run…

A: A refrigerator using 1030 W runs two-thirds of the time. How much does the electricity cost to run…

Q: A refrigerator using 1020 W runs one-third of the time. How much does the electricity cost to run…

A: The total time run by refrigerator ist=1330 days24 h=240 h

Q: 1000 w heater is used 6 hours daily and the cost of 1 unit of electricity is 40 p. how much will it…

A: November has 30 days In a month, number of hours heater power is consumed is : 30 x 6 = 180 Hours…

Q: If the power applied to a system is 10 kW, what is the voltage across the line if the current is…

A: Given : power supply, P = 10 kW = 10000 W Current, I = 48 A

Q: An electric clothes dryer is rated at 2,000 W. How much energy does it use in 35 min?   kWh

A:

Q: The cost to operate a clothes dryer for a year is $80.25. If the rate for electrical energy is…

A:

Q: At 15 cents is a  kilo Watt per hour. What does it cost to operate 1200 W for 1 hour?

A: We have the given information: Power is P=1200 W Time is t=1 hr Calculating energy in kiloWatt per…

Q: A refrigerator using 1030 W runs one-third of the time. How much does the electricity cost to run…

A:

Q: The cost to operate a clothes dryer for a year is $80.25. If the rate for electrical energy is…

A:

Q: In a sunnier location than Eugene, the sun shines for an average of 2000 hours per year. A home…

A:

Q: A hair dryer is rated at 1850 W. Assuming there are 30 days in a month, what is the monthly cost of…

A: Given data:  Power (P) = 1850 W = 1.850 kW Daily uses = 12 minutes = 0.2 hours Number of days in a…

Q: how much does it cost to run a 1500 W hair dryer for 10 minutes?

A: Given, power (P) =1500W = 1.5 kW            time (t) = 10 minutes = 10/60 hr. =1/6 hr.…

Q: if your household uses 430 kWh of electricity per month how many joules of energy are you using?…

A: Given Information:- Electricity used by the household is E=430 kWh.   Required:- We have to convert…

Q: Water flows over a section of Niagara Falls at a rate of 1.2 × 10^6 kg/ s and falls 50 m. How many…

A:

Q: A refrigerator using 1013 W runs one-fourth of the time. How much does the electricity cost to run…

A: Given,

Q: A lamp consumes 1200 J of electrical energy in 10 s. What is its power?

A: Answer: Given data, Lamp consumes electrical energy (E)=1200 J Time (t)=10 s

Q: If the unit cost of electricity in Luzon is PhP 8.9951 per kWh, what is the total cost (capital plus…

A: Given data: Cost of electricity = PhP 8.9951 per kWh Power (P) = 28 W Time (t) = 1000 h Capital cost…

Q: The cost to operate a clothes dryer for a year is $80.25. If the rate for electrical energy is…

A: given that,cost=c=$80.25 per yearrate, r=8.8 cents /kWh          r=$8.8 ×10-2 kWh1$=100 centstime,…

Q: If you have an average of 6.5 hours of online class per day for 204 days of school per year, how…

A: Given: The power consumed by the laptop is 90 W. The time is 6.5 hr for 204 days. The rate of cost…

Q: Suppose you use 57 kWh (kilowatt hours) of electricity at $0.35 per kWH, 91 kWh at $0.26 per kWh,…

A: We use 57 kWh of electricity at 0.35$ per kWh So cost of 57 kWh of electricity is 57×0.35$=19.95$ We…

Q: A person used his 1500 W air-conditioning unit for 5 h every day during the month of June. How much…

A:

Q: Cost of Electricity A refrigerator is an appliance that is left running all the time. In New…

A:

Q: A lamp consumes 500 J of electrical energy in 20 sec. What is the power of the lamp?

A: Power of the lamp is calculated by the formula:   Power = Energy consumed per unit time   Power =…

Q: The electrical power, P (in watts), transformed by an electrical appliance is given by P = f(i) =…

A:

Q: How many hours will it take for a 500-W electric drill to work for 100 kWh?

A:

Q: What is the yearly cost of operating a 100-W television for 2 hours per day, assuming the cost of…

A: Given data: Power (P) = 100 W Daily uses = 2 hours per days Cost of electricity = Php 11.00 per kWh…

Q: What is the efficiency of an electric motor that produces 1/3 horsepower (about 250 W) of useful…

A:

Q: A television of 100 W is used for 2 h, then what is the value of unit of expense of electricity?

A:

Q: A clock consumes 1.5 W of electrical power. How much energy does it use in each day?

A: In a day there are 24 hours, therefore, total time (t) in seconds will be,

Q: If a watt is a joule/sec, and an American family uses 1500 kilowatt hours per month. What are they…

A: they are buying energy in KILOJOULES (KJ) EXPLANATION :- Since, 1 watt = 1 joule / 1 second so, 1…

Q: A 100-W light bulb is accidentally left on for two days in a basement. If electricity costs 12¢/kWh,…

A: The total amount of energy is,

Q: Find the cost of a 0.500-kW computer that runs 15 hrs per day for one month (30 days) if the cost of…

A: Given data: Power (P) = 0.500 kW Daily uses = 15 hours per day Number of days per month = 30 days…

Q: An electric water heater consumes 300 watts for 3 hrs per day. What is the cost of running it for…

A: The energy used per day is given as  E=Ptwhere P is the per day power consumedt is the usage time…

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.