The power to a device is 40 joules per second (J/s).  How long will it take to deliver 640J?

Q: 1. Calculate the power absorbed by the 5-ohm resistor. 60 50 30mA 60

A: Kirchhoff's laws

Q: A battery of 24 V consumes 150 C charge.Calculate the energy stored in it in kilojoules.

A: Given: Charge q=150 CVoltage V=24 V

Q: If the woods are burned, bonds are broken down to give away heat energy. O Mechanical O Nuclear O…

A: Dry woods contains chemical energy in covalent bonds,when they are burnt this chemical energy is…

Q: 1- How much energy does a (200 w) electric lamp consumes in (1 hours) ? a) 710 KJ b) 720 KJ c) 730…

A:

Q: Calculate the power consumed by the 100 resistor. 3/30 50/60 100 -j250 2502 6j10Ω

A:

Q: Q1/ Choose the correct answer for the (10) of the following: 1- How much energy does a (200 w)…

A: To solve above problem, we will use Ohm's law and Kirchhoff's law: Ohm's law state that in a current…

Q: the cost of using a 5 horsepower motor for 2 hours if the rate is 9 cents per kWh

A: In this question we will find cost of motor..

Q: Calculate the power Delivered by the battery

A:

Q: If 1 unit of electricity costs about 2 USD, then how much electric bill will be generated if a 100 W…

A: 1 unit of electricity is equivalent to 1 kilowatthours (kWh) of electrical energy. It is to be noted…

Q: EXTRA CREDIT A Watt (unit of power) is Joules of Energy consumed per second. What is the total…

A: Given  The power consumed by resistor is P=20 wattsTime t=5 sec

Q: Assuming a rate of 3 cents per kwh,how much will I pay for the loss with 7657.8881 watts due to the…

A: The solution is given below

Q: EXAMPLE (2):- If (100 j) of energy consumed during (5 second) what is value of the power will…

A: According to unit dimension, 1 joule = 1 watt-sec Energy = 100 Joules Time = 5 sec

Q: How much energy (in kilowatt-hours) is required to light a 100watt bulb (continuously for 1 year =…

A: Energy required to bulb= power* time in hours in a year. number of hours in a year = Number of days…

Q: , calculate the power absorbed by a load of 10 c

A: A dc shunt generator has,  No.of poles (p) =4, speed (N) =900 rpm No.of conductor (Z) =400, Flux per…

Q: 150 ЗА (Т) T)41 E3V

A:

Q: 9. Calculate VAB. 25 ohm 40 ohm A 20V 15 ohm 10 ohm B

A: According to the question we  have to calculate the value of voltage across AB (VAB)

Q: Calculate the power delivered by the battery

A: we take a ideal battery.having internal resistance zero.

Q: The electrical Energy consumed by a 200 W electric bulb in 3 hours is equal to Watt-Hour

A: In this question we will find energy consumption and current...0

Q: A water jet consumes "3X50" W for 126 hours a week. What is the energy consumed (kWh) for a one-year…

A:

Q: 1 (t) 3202 vos 50 cos (40ot - 98) Volts 31.25 Ho0mH HF

A: Given Vg =50cos400t-90° VR1 =320 ΏR2 =80 ΏC =31.25 μF L =400 mHω =400 rad/S

Q: Find the electrical current in amperes and electrical power in watts VOLTAGE: 231V -take note of a…

A:

Q: Please calculate the equivalent resistance? 42.0 S M 75.00 W 33.002 W

A: Given data, Circuit diagram is given as,

Q: What is 10^2 ergs/sec in kW?

A: we need to find out the given value in kW.

Q: A total of 0.8 kg of water at 20 degC is placed in a 1-kW electric kettle. How long in minutes will…

A: The solution can be achieved as follows.

Q: What are the watt-seconds supplied by a motor developing 3 British hp for 4 hours?

A: Given, Motor rating is 3 HP British Time t=4 hours

Q: How much energy does a 3-hp motor deliver in 10 minutes? Assume that 1 horsepower = 746 W.

A: Given, Power, P=3 hpTime, t=10 min Also, 1 hp =746 WAnd,1 min =60 sec

Q: A 700 MW power plant consumes coal containing 1.23x 10^14 Joules of thermal energy every day. What…

A: In this question we will find efficiency of system...

Q: 1. Calculate the power absorbed by the 5-ohm resistor. 60 50 30mA

A: ELECTRICAL NETWORK: When addressing a circuit problem or constructing a balanced circuit, the word…

Q: What is the cost of running it for one year if electricity

A: Given, An electric water heater consumes 5 kW for 2 hours per day. So per day energy consumption is…

Q: How much power in kW can a machine do with 600 kWh of work in 12 hours?

A: kWh is the units of Energy  Energy is the product of power and time. Power expressed in kW and time…

Q: Calculate the power absorbed by the 3-ohm resistor

A: In this question , we have to find power absorbed in 3 ohm..

Q: What is the cost of using a 10HP motor for two hours if the rate is P50.00 per kWhr ? If…

A: Given, Power rating of motor = 10 Hp                                     = 10×0.75=7.5 kW Operating…

Q: If 420 J of energy are absorbed by a resistor in 19 min, what is the power to the resistor?

A: Power absorbed by the resistor = Energy absorbed in JTime in seconds. 1 min = 60 sec Given , Energy…

Q: 8Ω ww 8Ω 10N

A: We have given the following circuit to find the equivalent resistance

Q: If a 100 W machine runs for 20 hours per day, then estimate the total energy consumption per month…

A: Given 100 w machine runs for 20 hours per day Assume 30 days are there in a month

Q: How long does it take a 100 W bulb to consume 13 KJ of energy?

A: Given: The bulb rating is P=100 W The energy consumed is 13 KJ

Q: Determine the unit of energy if the power is measure in mega watts and the time in minutes. O a.…

A: Option d is correct. The explanation is provided below.

Q: Commercial unit of electricity is kWh. When we convert kWh to joules the equivalent value will be O…

A: Given, Commercial unit of electricity is kWh. To convert kWh to Joules.

Q: The human body uses 7500 kJ of energy every day. What is the rate of energy consumption per second…

A: This question belongs to basic electrical . It is based on the relation between energy consumption…

Q: A current of 0.3 Ampere flowing through the filament of a device releases 9.45 Joules of heat energy…

A: It is given that: I=0.3 Aε=9.45 joulest=5 sec

Q: The specific fuel consumption by a thermal power station is 0.75kg/Kwh. The units generated for a…

A: In this question we need to find a fuel consumption per day by station

Q: Conventional Power plant = Fuel going in is 100%, Electrical power going out is 35%, and Waste is…

A: In this question,  We need to determine the efficiency of the conventional power plant?  If Fuel…

Q: If 1.27 × 1021 electrons move at a given point in the circuit for 100s, how much current is flowing…

A: Resistors, inductors and capacitors form an integral part of any electrical circuit. A source,…

Q: One kilowatt equals ______. a. 33,000ft-lb of work /min b. 550 ft-lb of work/sec c. 100 watts d.…

A: We need to select correct option for one kilowatt power

Q: A stove element draws 15 A when connected to a 120 V line, the time it takes . .to consume 30 kJ

A: We know the relation between power and energy as Energy(E)=Power(P)*time(t) The units of energy is…

Q: An electrical equipment in an office takes a current of 20 A from a 230V supply. The equipment is…

A: Given data, Current is given I = 20 A Voltage V =230 V Time t = 30 hour

Q: The Power dissipated by a device is 40 Watts. How long will it take to deliver 640 Joules?

A: We know that power of an entity is defias the amount of work done or energy spent per unit time i,e.…

Q: A power station burn 0.5 kg of fuel per kwh. Assume the fuel has an calorific value of 7500…

A: A power station burn 0.5Kg of fuel per Kwh.Assume the fuel has an calorific value of 7500…

Q: Which unit is used to measure an amount of electric energy? O watts volts amps joules

A:

Q: 100 KA V01 V 20 k2 400 ka 20 ka

A: Kirchhoff's current law: This law states that the sum of current flowing through a node is zero. So…

Q: 1. Convert 0.5 kWh to equivalent mechanical & heat energy.

A: We know conversion formula mechanical energy and heat energy for kWh .

Q: A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many…

A: In this question,  We need to choose the correct options Given data :- Alliance uses Power P= 350W…

Q: 52. How much energy in kilowatthours is required to keep 230-W oil-burner motor running 12 h a week…

A: The solution can be achieved as follows.

Q: How much matter will be converted entirely to energy to produce 25 million kWh?

A:

Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.