57 Answered Questions for the topic electricity

Electricity

11/18/16

Kilowatt-hours
The cost of electricity in a certain city is $.08 for each of the first 300kWh (kilowatt-hours) and $.13 for each kWh over 300 kWh. Find the number of kilowatt-hours used by a family that receives... more
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Electricity Science Chemistry Chem

07/10/16

Which of the following compounds when placed in water would produce an electrically conductive solution?
-FeSO4 -ZnBr2 -Mn(OH)2 -CsBr -CCl4   Please select all that are true! 
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Electricity

06/15/16

A resistance of wire is R ohm. What will be its new resistance, if it is stretched to n times it's original length
This question is from chapter electricity of class 10. Anyone please give me the answer of this question.     
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Electricity

05/31/16

In the house of Ram, there are 20 incandescent bulbs each of 100 W, three geysers each of 2000 W and 20 tubes of 40 W.
In the house of Ram, there are 20 incandescent bulbs each of 100 W, three geysers each of 2000W and 20 tubes of 40 W. All these appliances work for 5 hours in a day. Every month, he paysheavy... more
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Electricity Physics Work Magnetism

05/25/16

I know that they repel but I don't get the work done and energy conversion
Two positive charges are brought closer together. Describe the work done and the energy conversion that occurs.
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05/23/16

Magnetic Force
What is the magnetic force on a particle that has –3.2 × 10–19 C of charge and is moving at 2.5 × 107 m/s to the right through a magnetic field that is 0.24 T and pointing away from you? Specify... more
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Electricity Physics Magnetism Circuits

05/23/16

Current in a resistor? Resistance?
a. What is the current in a 40.0 Ω resistor that has a voltage drop of 14.0 V across it?b. What is the equivalent resistance of a 3.0 Ω resistor, a 6.0 Ω resistor, and a 4.0 Ω resistor connected in... more
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Electricity Physics Magnetism Current

05/23/16

Power of a light bulb?
What is the power of a light bulb that has a resistance of 144.0 Ω at 120.0 V?
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Electricity Physics Energy Magnetism

05/23/16

Electric potential energy? Capacitance?
a. Calculate the electric potential energy stored in a 1.7 × 10–11 F capacitor that stores 3.40 × 10–10 C of charge at 20.0 V.   b. Calculate the capacitance of a system that stores 8.0 × 10–10 C... more
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05/23/16

Electric force?
Calculate the electric force that exists between two objects that are 7.3 × 10–2 m apart and carry charges of 4.5 × 10–6 C and –7.2 × 10–6 C. Is this force attractive or repulsive?
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05/22/16

Can someone answer this question please?
Calculations made in accord with NEC article 220 indicate 110 amperes of continuous load with 40 amperes of noncontinuous load on a single-phase, 240/120-volt feeder.  What is the minimum conductor... more
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05/22/16

What is the answer to this question? I could not find it anywhere.
What is the size of the largest solid (not stranded) conductor approved for installation in raceways?
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Electricity Physics Energy

05/04/16

Input and Output Energy
A light bulb has output energy of light and heat. List five other appliances. For each appliance, the input energy is electrical. What is output energy?
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Electricity Physics

05/04/16

What is Electricity?
Explain what you think electricity is, how it behaves, and how it does what it does.
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Electricity Physics Circuits

05/04/16

Physics Question: Generating Electricity
Electrical appliances plug into the wall with a single plug, but a plug has at least two prongs (sometimes there is a third one, but the minimum is two). Why do you think that this is the case?... more
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Electricity Physics School Force

04/28/16

Physics electricity - electric force, potential, field, PE
True statements about the relationship between the electric field and electric potential include which of the following?    I. If the electric field at a certain point is zero, then the electric... more
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Electricity

03/11/16

Thevenins Theory
I have a simple Thevenin problem that I can't seem to wrap my head around. All I need to do is find the Thevenin Equivalent.   ______________________  |                                     |  |    ... more
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12/31/15

What is power consumed by each bulb in 110V line ?
Two electric bulbs,each designed to operate with the power of 500W in 220V line, are connected in series with 110V line.What is power consumed by each bulb ?
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Electricity

05/14/15

about electric field
charge of 50 μC is placed on the y axis at y = 3.0 cm and a 77-μC charge is placed on the x axis at x = 4.0 cm. If both charges are held fixed, what is the magnitude of the initial acceleration of... more
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04/02/15

An electron is moving north at a velocity V. It passes through an electric field that also points north. What happens to it’s motion?
test tmro pls help
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Electricity Math Physics Graphs

04/02/15

Object A and B have equal charges. If neutral object C touches A then B, what is the force b/w the newly charged objects A and B?
PLEASE HELP ME!!! i have a physics test tmro!!!
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Electricity Series Circuits

02/26/15

Math word problem i need to know how much wire in feet is used
In a lighting circuit there are 19 lamps connected in a series lighting string. If the resistance of each lamp is 57.7 ohms, and the total circuit resistance is 1105 ohms; how long is the #8 AWG... more
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Electricity

02/08/15

The drawing shows four point charges.
The drawing shows four point charges. The value of q is 3.9 μC, and the distance d is 0.94 m. Find the total potential at the location P. Assume that the potential of a point charge is zero at... more
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Electricity Word Problem

01/14/15

Word Problem about electricity function
An electricity company charges its customers a base rate of $10 a month, plus 6 cents per kilowatt-hour(kWh) for the first 1200kWh and 7 cents per kWh for all usage over 1200 kWh. Express the... more
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Electricity Physics

12/04/14

Please solve the question in the description :)
Pontiac Silverdome Stadium, in Detroit, Michigan, is the largest air supported building in the world. Suppose a charge of 18.0 μC is placed at one end of the stadium and a charge of –12.0 μC is... more
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