What is the total cost of using all of the following at 9¢ per kilowatt-hour? (i) A 1200-W toaster for 30 min (ii) Six 50-W bulbs for 4 h (iii) A 400-W washing machine for 45 min (iv) A 4800-W electric clothes dryer for 20 min

Q: What is the electrical energy stored per 1 squared micron of cell membrane at the voltage -70 mV?

A: Area of cell membrane=A=1 micron2=1×10-62 m voltage=V=-70 mV=-70×10-3V

Q: You have a 1300 W toaster. How much electrical energy in Joules is needed to make a slice of toast?…

A: The objective of the question is to calculate the electrical energy consumed by a toaster in Joules…

Q: What current is used by the 220 V AC electric heater which heats 2 kg of water (c = 4200 J/(kg K))…

A:

Q: The process of ____________ occurs when heat is transferred from a hotter object to a cooler object.…

A: The first concept revolves around heat transfer from a hot object to a cold one .The second concept…

Q: 37. Three identical light bulbs are attached to a battery as shown. Compared to when the switch is…

A: Given Three identical bulbs are connected as shown in the figure.we have to find by what factor the…

Q: How many watts does a flashlight that has 6.00×102 C pass through it in 0.500 h use if its voltage…

A: Power is product of current and potential . P=IV       .....1 where I is current            V is…

Q: Use the information and table below to answer the following question. A student is studying…

A: Given Current used in Refrigerator = 4 A Current used in Microwave 8 A             Current used in…

Q: How many watts does a flashlight that has 6.00×102C pass through it in 0.500 h use if its voltage is…

A: Given, Charge 6.00*102 C Time t is 0.500 hours And voltage is 3.00 V

Q: Calculate the time taken by a 60 bulb to consume 3000 J of energy.

A:

Q: Find the power supplied by the battery. 502 50V 200N 1002 252

A:

Q: Assume you have one room it has 8 lamps and they are working 11 hours per day. If the unit price is…

A: Solution: Given that working hours = 11 hours working days = 20 days number of lamps = 8

Q: The bill for running 13 electric heaters rated at 1500 watts each is $17.98. If the electric utility…

A: Answer Given  Number of electric heaters n = 13 Power of each electric heater P = 1500 watts Total…

Q: A charge of 4.00 C of charge passes through a pocket calculator’s solar cells in 4.00 h. What is the…

A: Charge, q = 4 C time, t =  4 h Voltage, V = 3 V

Q: A compact fluorescent lamp (CLF) uses less energy than its equivalent incandescent bulb. How much…

A:

Q: A typical cost for electric power is $ 0.135 per kilowatt-hour. (a) Some people leave their porch…

A: Solution

Q: R2 = 576 2 R = 576 2 ww R3 = 576 2 ww

A: Given: R1=576 ΩR2=576 ΩR3=576 Ω The supplied voltage is 120 V.

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: 4V r= 20 R

A:

Q: A Heater has a wattage rating of 1500W and has been in operation for 2 hours. The Energy Company…

A: 6. H1. The energy consumed in kWh can be calculated as

Q: How much more energy does a 100 W light bulb use if it is left on 2.08 hours, versus a high…

A: Energy consumed by 100W bulb is E=Pt=100 W2.08 h=0.208×103 Wh=0.208 kWh

Q: equivalent capacitance

A:

Q: Electric Power Directions: Answer the following problem, write your answer with complete solution.…

A:

Q: Compare the energy consumption of two commonly used items in the household. Calculate the energy…

A: Wtoaster = 0.0967 kWh Wlight = 116 kWhExplanation:Approach to solving the question:Detailed…

Q: A small vegetable shop use the following electric appliances: (i) Two Air Conditioner of rating 2200…

A:

Q: A refrigerator using 1028 W runs one-third of the time. How much does the electricity cost to run…

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: A house has 3 tubelights, 2 fans and a television. Each tubelight draws 40 W. The fan draws 80 W and…

A:

Q: A long, thin aluminum wire of thickness 0.75 mm is connected to a 4.5 Volt battery. The power…

A: Power, P=260W Voltage, V=4.5 Volts Diameter of wire, d=0.75mm=0.00075m Radius of wire,…

Q: A stationery shop use the following electric appliances: (i) Three Air Conditioner of rating 2200 w…

A:

Q: What is the available energy content, in joules, of a battery that operates a 2.00-W electric clock…

A: Given data: Power, P=2.00 W Time taken, t=540 days

Q: 13. An energy-efficient fluorescent lightbulb operating at power P1 = 28 W can produce the same…

A: Given data: Energy-efficient fluorescent lightbulb operating power, P1=28 W Conventional…

Q: ne 9-volt battery contains 19.7 thousand joules of energy.  A 4-pack of 9-volt batteries cost $10.31…

A: The energy in one battery E =19.7×103 J Total energy of 4 pack 9V battery is 4E The power is 1 Watt…

Q: Suppose the cost of an incandescent bulb is 23 cents and that electricity costs 12 cents/kWh.…

A:

Q: Suppose you leave a 50 W bulb on for a month. Approximately how much will you pay for using that…

A:

Q: An electric water heater is designed to produce 48 kWkW of heat when it is connected to a 240-V…

A:

Q: An 8-A electric lamp is plugged to a 110-V outlet and used for 45 minutes. How much energy does it…

A:

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.