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

Q: Consider a TV set that consumes 120 W of electric power when it is on and is kept on for an average…

A: The expression to determine the daily cost,

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: An electric heater is rated 1500 W. How much energy does it use in 10 hours?

A: Given : P = 1500 W = 1.5 kWh T = 10 hours

Q: Four light bulbs, rated at 100 W, 75 W, 50 W and 25 W each, are in parallel. What is the total power…

A: Power rating of light bulb 1,  Power rating of light bulb 2,  Power rating of light bulb 3,  Power…

Q: An electric motor is almost identical in construction to an electric generator, but the motor…

A: Electric generator converts mechanical energy in to Electrical energy but Electrical motor converts…

Q: How much power is provided by a motor if it does 27 J of work in 3.0 seconds?

A: Work = W = 27 J Time = t = 3 s Power is defined as the work done per unit time. The mathematical…

Q: An electric clothes dryer is rated at 4,000 W. How much energy does it use in 40 min?

A: Given that  An electric clothes dryer is rated at 4,000 W So, power = p = 4000 w Also time = t = 40…

Q: What is the average wattmeter reading of one wattmeter method? O a. P1+P2 O b. Total power /2 O c.…

A: In one wattmeter method, Total power = average wattmeter reading x 3

Q: An electric clothes dryer is rated at 2,200 W. How much energy does it use in 45 min?

A: Write the formula for power.

Q: What power output is required of a motor that needs to lift a 450 kg elevator car 12 meters in 8.0…

A:

Q: Which is not a unit of power? a.joule per second b.kilowatt-hour c.Newton-meter per second…

A:

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: A washing machine has a power requirement of 2500 W. Every month the machine is used for 6.0 hours.…

A: power requirement of washing machine = 2500 Wtime = 6 hours cost of electricity = 13 cents/kWh

Q: A microwave has a power requirement of 1,264 W. A frozen dinner required 4.2 mins to heat on full…

A:

Q: A lightbulb has an average power output of 125 watts. If the lightbulb is left on for an hour, what…

A: Given: The power output of the lightbulb is 125 W. The running time of the bulb is 1 hour.…

Q: A standard computer has a power supply of 550 W, and many people just leave their computer on all…

A:

Q: What is the approximate cost of operating a 65 W light bulb for 3.0 h per day for 1 week, if the…

A: The given values are, P=65 Wthour/day=3.0 h/daytday=1 week=7 daysrate=14 cents/kWh

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: The rate at which energy is transferred is called: A) Power B) Watt C) Volt D) Potential

A: The rate of transfer of energy is called power.  P = energy / time

Q: A 1200W microwave oven transforms 1.8 x 10^5 J of energy while reheating some food. Calulate how…

A:

Q: What is the average amount of electricity used by a computer?

A:

Q: 10. A 100 MW expressed in powers of 10 is given by: * O 1.0 x 106 W 1.0 x 107 W 1.0 x 108 W 1.0 x…

A: The power in megawatts is given as,

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: 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: What is the power dissipated in the 200 1esistor when 402 30 a 30 2 30 Lm 202 Select one: a. 15 W ww…

A: power disipation = I2 R

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: ED light bulb uses energy of 3W.  What is the electrical energy is used if the light is on for 2…

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 cost of electricity in Los Angeles is 5 cents per 1,000,000 joules. Suppose a small 2000-watt…

A: Given data: Cost of electricity = 5 cents per 1,000,000 J Power (P) = 2000 W Time (t) = 3 hours…

Q: A microwave oven has a power requirement of 1,243 W. A frozen dinner requires 5.6 min to heat on…

A: The electrical energy used is given by, E=Pt Here, P is the power of the oven and t is the time for…

Q: A family of five is planning to install solar panels on the roof of their home to help reduce the…

A: Dewr student The energy rating is given in KiloWatt Hour. As we know the power is rate of doing…

Q: The mechanical energy of an * :object is given by 1/2mv*v O EK+EP O Ek1+EP1=Ek2+EP2 O O O O

A: Mechanical energy is defined as the sum of energy possessed by motion (K.E) and energy possessed by…

Q: What energy is produced by a 200 W light bulb lit for 2.7 hours? Answer in units of J.

A: Power is defined as the rate at which energy is expensed or rate of doing work. P=Et

Q: A 1500 W portable heater will use 1.5 kW per hour. In 4 hours, it would use Watts?

A:

Q: You are tasked with designing a new motor that is based off of an older model. The new model…

A: Given data:  Work done by new model (W') = 1.5W Time taken by new model (t') = 0.5t Required: New…

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 clothes dryer is rated at 2,900 W. How much energy does it use in 20 min?

A: E=Pt

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…

Q: How long would it take a 500 W electric motor to do 1.50 x 10^5 J of work?

A: GivenPower (P) = 500 WWork (W) = 1.50 × 105 J