Electrostatics

Electrostatics is the branch of physics that deals with the study of charges at rest. A common electrostatic phenomena is plastic wrap sticking to your hand and itself when removed from the box. Everything to do with electrostatics goes in this category.

3,812 Questions
Calculus
Electrostatics
Magnetism

What is the value of k in electrostatics?

In the formula for electrostatic forces, the value of k is 8.99 x 109 N m2 C-2

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Electrostatics

What do you call a very scary electrostatic discharge?

Frightening Lightning

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Earth Sciences
Electromagnetic Radiation
Electrostatics
Batteries

Who invented the lemon battery?

alessandro volta

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Java Programming
C Programming
Electrostatics

What is static?

A atom consist out of 2 parts where as the centre is called the nucleus which is form out of Protons and neutrons and the outer part that orbits the nucleus is Electrons. Protons is positively charged, Electrons is negatively charged and neutrons well you guessed it, its neutral. When 2 or more objects that is not earth bound is in constant contact or rubbed against each other, the Electrons from one of the objects is transferred to the other object and thus that object has more Electrons than Protons and thus it has a negative charge and the other object has a positive charge as it has no more Protons than Electrons. Protons doesn't normally get transferred from object to object as it is normally held firm to the Atom. Opposite objects attract each other while the same charge repel each other but a neutral object will attract both positive and negative charged objects. When a charged object is in contact with a different charged object a discharge will take place and thus static electricity will take place.
Static menu: All patrons are offered the same foods every day. Once a static menu is developed and established, it rarely changes. Static menus are typically found in fast-food operations, ethnic restaurants, steakhouses and the like. Static menus can also be in institutional settings. For example, a static menu at an elementary school could offer students, along with vegetable and dessert, the same luncheon choices every school day: a cheeseburger, fish sticks, chicken tacos, pizza wedges or a sandwich.

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Physics
Electricity and Magnetism
Electrostatics

Is your body a conductor?

Yes it is. It isn't a very good one but the water and ions in your body allow currents to flow. If your body was a perfect insulator, nobody would ever get an electric shock.

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Chemistry
Electromagnetic Radiation
Electrostatics

What does electromagnetic spectrum refer to?

The EM spectrum is the range of frequencies of EM radiation.

From low to high frequencies the spectrum goes: Radio, Microwave, Infrared, Visible, Ultraviolet, X-ray, and Gamma ray.

Frequency is inversely related to wavelength by c = frequency * wavelength where c is the speed of light. So the same spectrum goes from long wavelength to short wavelength

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Science
Home Electricity
Painting and Staining
Electrostatics

Where is static electricity useful?

Tape. Post-it notes. Sending paint droplets into the air, to be coalesced primarily on a staticlly-charged surface. In furnace return air electronic air filters. In laser printers, where it attracts carbon particles to the paper's surface.

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Physics
Electrostatics

What is the meaning of edge effects in electricity?

My guess is you're referring to the edge effect on electric fields. In many textbooks, and many problems dealing with electric fields you will see assumptions used to minimize the effect an edge has on the electric field you're attempting to analyze, which is done to simplify the problem. One common example is determining the electric field strength at a point a given distance from a conductor carrying X amount of current. It's often assumed that this is an infinitely long conductor. This removes the need to analyze the electric field due to the corner of the conductor, where the shape, sharpness of the corner, size, type of conductor, and amount of current can impact the actual effect that corner has on the electric field strength at a given distance from the conductor. Usually the impact of the corner is minor, so it can be ignored by assuming an infinite conductor.

Other examples:

-calculating the electric field X distance from a charged plate (assume the plate is infinite)

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Electrostatics

What is graphite electrical conductivity?

electrical conductivity of graphite?

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Credit and Debit Cards
Electrostatics
Magnetism

How do you disable a magnetic strip?

It's called a magnetic strip for a reason, and usually checkouts that use anti-theft devices will have a sign that says keep magnetic strips away from a certain area (the cashier usually rubs the item over the area to disable the device). You can do the same thing. Use a strong magnet, and rub it several times over the strip.

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Electrostatics
Magnetism

Permeability of a nonmagnetic medium is..?

permeability of nonmagnetic medium equal μο

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Physics
Electricity and Magnetism
Electrostatics

Can you see static electricity?

Keep in mind that "electricity" is the flow of electrons through or along a conductor. Anything can be a conductor with a high enough charge. When the charge becomes sufficiently high, or if the static charge climbs rapidly, you will see its effects. You can't "see" electricity in any form. All you can see are its effects. The sparks you see associated with electricity are just ionised air. What you see are lightning (a spark traveling very quickly through the atmosphere), the arcing discharge from a generator to ground, the glow of small sparks between bed sheets in a dark room, the hair of school children standing on end from contact with a Van de Graff generator, gold leaf separating in a Leyden Jar.

Just adding to the answer already posted here. Any substance can become an electrical conductor when there is a large concentration of free electrons present there. Metals have a high concentration of free electrons and so are good conductors and as such cannot be used to produce static electricity. If you rub your feet on a dry rug, you can generate up to 10000 volts of charge but you would not feel it because the rug is not actually a conductor.

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Fossil Fuels
Electrostatics
Natural Gas

Can static electricity ignite natural gas?

cause electricity stimulates the molecules in the gas, and since igniting is the only mayor funccion a flammable gas can do, it ignites.

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Electrostatics
Magnetism

Examples of good resistors?

Good resistors should have properties of adjustable electrical resistance, such as slide rheostat, resistance box.

The resistance of slide rheostat can be capable of continuous alteration, this is a good characteristic for slide rheostat. But we can not measure the definite number of the slide rheostat resistance.

For resistance box, we can read the exact numerical value of its resistance. Nervertheless, its resistance is discontinuous.

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Physics
Electrostatics

Is electrostatic force a central force?

The electromagnetic force, as defined by Coulomb's Law, is one of 4 fundamental forces known to exist in our universe, the others being gravitational force, and the strong and weak nuclear forces. You might say, therefore, that it is a central force.

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Electrostatics
Atoms and Atomic Structure

What is total charge in an atom?

An atom without a charge would be neutral because the atom has an equal amount of protons and electrons.

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Physics
Engineering
Electrostatics

What is difference between static electricity and current electricity?

  1. static electricity- a kind of electricity produced by rubbing 2 different materials together to create friction/heat which makes static electricity.
  2. current electricity- a kind of electricity that has continuous movement of electrons

[don't put your grade for safety purposes]

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Physics
Electricity and Magnetism
Electrostatics

Is electric current a vector quantity?

We generally think of electric current as a scalar quantity. When we think of 1/4th amp or 20 amps, we think of an amount (a scalar quantity) of current flow. On another plane, the electromagnetic forces at work in current generation are actually force vectors. In the traditional sense, electric current, which is the movement of electrons, is from negative to positive. This is not a vector, though. In the macro or "large" world, think of current as scalar.

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The beauty is that though current is not a vector definitely its direction of flow is used to make length as vector. I is not vector. dl is not vector but I dl will be considered as vector. So innovative and essential concept.

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Current density is a vector which appears in Maxwell's equations.

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Electrostatics

How does a conduction or convection cooker work?

conduction: It z da transfer of heat energy in SOLIDS.When a solid is heated, the atoms begin to vibrate with greater amplitude, in this way one atom transfers heat energy 2 its neighbouring atom. Hence heat is transferred 4m 1 end of the solid to the other end. In conduction, heat is transfered but the atoms do not leave their mean position.

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Organic Chemistry
Spectroscopy
Electrostatics

How is the dipole moment formed?

a positive charge and a negative charge separated by a distance

A dipole moment (µ) is the end of the vectorial sum of the electrical charges within a molecule or compound. e.a. CH4 is 100% symmetrical and have the same elements attached to it, so µ = 0. However, if you replace one -H with a -Cl then the vectorial sum is no longer zero since the charge is pointing towards the most electronegative element, in this case to -Cl. This creates a dipole moment.

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Child Health
Physics
Electrostatics

When a child can bang two objects together?

8 months is a ball park. Try not to be too literal about developmental milestones. people vary and that is the only thing that is normal. Joymaker RN

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Electromagnetic Radiation
Electrostatics
Visible Light Spectrum

What is the difference between Free Electron Theory and Band Theory of solids?

Free Electron Theory:

This theory tells that, metals conduct electricity because of the presence of free electrons in it. The outermost shells of metal atoms will be loosely bound with their nucleus. So the electrons in it are free to move anywhere in the solid.These electrons are called free electrons and they are responsible for the conduction of electricity.

Band theory of solids:

A solid is assumed to contain many bands in which the electrons in it are packed. The most important are valence band and conduction band. The energy of electrons in these bands will be different.The difference in energies of valence band and conduction band determines whether the solid is a conductor, semi - conductor or insulator.For insulators, the difference between energies of them ( energy gap ) will be very high, and for conductor, these bands overlap each other.

The conduction band carries the electrons that conduct electricity, but the valence band has all the electrons in the ground state. Whether they go into the conduction band depends on the temperature and the energy gap between the bands. In a conductor, these bands overlap, and hence many electrons can become conducting. Thus, Band Theory explains distinction between metals and insulators, which Free Electron theory cannot do (since it assumes all valence electrons become conducting). Calculations are be performed to see which materials will have big energy gaps and which will have overlapping bands.

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Animal Life
Electrostatics

What is maxwell's right hand thumb rule?

Ampere's right hand thumb rule states that if you hold the current carrying wire in your right hand so that your thumb points in the direction of the current, then the direction in which your fingers encircle the wire give you the direction of the magnetic lines of force around the wire .On reversing the direction of current in the

wire , the direction of the magnetic lines of force is also reversed.

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Electrostatics

What happens if you rub your hair to a balloon?

The static electricity given off by the contact between both the hair and balloon will cause a peculiar attraction that most would see as hair standing up. The hair will develop mild attraction with the balloon only to a certain degree.

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Science
Electrostatics

Can static electricity cause a sand storm?

No, but sandstorms can cause static electricity.

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