answersLogoWhite

0

🧪

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.

1,860 Questions

What is the CGS unit of current in the electromagnetic system equivalent to 10 amperes?

The centimetre-gram-second system (abbreviated CGS or cgs) is a metric system of physical units based on centimetre as the unit of length, gram as a unit of mass, and second as a unit of time. All CGS mechanical units are unambiguously derived from these three base units, but there are several different ways of extending the CGS system to cover electromagnetism.

CGS approach to electromagnetic units The conversion factors relating electromagnetic units in the CGS and SI systems are much more involved - so much so that formulas for physical laws of electromagnetism are adjusted depending on what system of units one uses. refer to link below for methods

What is one way to have static discharge on a balloon?

One way to create static discharge on a balloon is to rub it against a wool or fleece material. The rubbing action transfers electrons between the balloon and the material, creating a static charge. When you touch the balloon after rubbing, you may feel a small shock as the excess charge discharges.

Why does electrical bulb used at home does not glow when connected to a dry cell?

The key is your description of it as "bulb used at home". From that description, it's

understood to be a bulb designed to be installed in a socket in the bedroom, closet,

basement, etc., and powered by the mains voltage ... roughly 120 volts or 240 volts,

depending on what country it's used in.

The voltage between the terminals of the "dry cell" is about 1.5 volts.

The power dissipated by any passive device is proportional to the square of the voltage across its ends.

In the US or Canada, the power dissipated by the bulb would be (1.5/120)2 = 0.00016

of the power it's designed to use when glowing normally.

In many European or Asian countries, the power delivered to the bulb is (1.5/240)2 = 0.000039

of the power it's designed to use when glowing normally.

The filament in the bulb is not dissipating enough power to even get warm, and

certainly much too little power to "incandesce" or 'glow'.

In short, the voltage of the dry cell is only about 1.5 volts. That's the reason why

dry cells are seldom used to operate air conditioners and refrigerators, or to start

cars.

Does static electricity move around an insulator?

Static electricity typically stays localized on the surface of an insulator because insulators do not allow the flow of electrons, which would be necessary for the electricity to move around. This is why insulators are used in situations where preventing movement of electrical charges is desired.

Why does a balloon becomes negatively charged when you rub it with a duster?

When you rub the balloon with a duster, electrons are transferred from the duster to the balloon. This excess of electrons on the balloon gives it a negative charge. Electrons are negatively charged particles, so when they are transferred to an object, that object becomes negatively charged.

Is electrostatic force charge independent of mass?

Yes, electrostatic force is charge dependent and independent of mass. The force between two charged objects is determined by the magnitude of the charges and the distance between them, not by the mass of the objects.

Does static electricity attract water?

Static electricity itself does not attract water. However, if an object has a static charge, it can potentially attract water molecules due to the polar nature of water. This attraction is more due to the interaction between the charged object and the polar water molecules rather than the static electricity itself.

How does an uncharged leaf electroscope indicate the presence of static electricity?

When brought near a charged object, an uncharged leaf electroscope gains charges of the opposite polarity through induction. This causes the leaves to repel each other, indicating the presence of static electricity.

Why electric field lines are continuous?

Electric field lines are continuos because they move from +ve to -ve it means they move a particular point from A to B if they move from A to B and then to A then this path way is called discontinuous

What the advantages and disadvantages of electrostatic printing?

Advantages of electrostatic printing include high printing speed, versatility in printing on various types of materials, and cost-effectiveness for low to medium volume printing. Disadvantages can include the need for specialized equipment, limitations in the color accuracy and print resolution compared to other printing methods, and potential environmental concerns due to the use of toner and electricity.

How does the electric force between two charged objects change as the move apart?

The electric force between two charged objects decreases as they move apart. This decrease in force is inversely proportional to the square of the distance between them according to Coulomb's Law.

A transformer for a laptop computer converts a 120 volt input to 24 volt output show that the primary coil has fives times as many turns as the secondary coil has?

To convert voltage from primary coil to secondary coil in a transformer, you can use the formula VP/VS = NP/NS, where VP is primary voltage, VS is secondary voltage, NP is number of turns in primary coil, and NS is number of turns in secondary coil. Given VP = 120V, VS = 24V, and we need to show the primary coil has 5 times as many turns as the secondary coil. Plug in the values: 120/24 = NP/NS. Solving for the ratio of turns, we get NP/NS = 5. This means the primary coil has 5 times as many turns as the secondary coil in this transformer scenario.

What happens when an inflated balloon is rubbed with a wollen cloth and brought near the pieces of paper?

When an inflated balloon is rubbed with a woolen cloth, it becomes charged with static electricity. When the charged balloon is brought near pieces of paper, the static electricity causes the paper to be attracted towards the balloon due to the electric charges interacting with each other.

What happens when static electricity is traveling from one object to another?

Electrons flow from high concentration to low,

and the voltage fields equalize.

It's almost unnoticeable unless the charge jumps an air gap ...

where it will produce a spark, with light, heat, and a shocking sensation if a person is included in the path.

What are Static dissipative materials?

Static dissipative materials are materials that are designed to control and reduce the buildup of static electricity. They have a surface resistance that falls within a specific range (10^6 to 10^9 ohms/square) and allow charges to move across their surface without generating a spark. These materials are commonly used in electronics manufacturing, explosive environments, and cleanroom environments to prevent damage to sensitive devices and equipment.

Why rapping is required in emitting electrode in electrostatic precipitator?

Rapping is used in electrostatic precipitators to dislodge the collected dust particles from the emitting electrodes, allowing them to fall into the collection hoppers for disposal. This helps maintain optimal performance by preventing buildup and blockage on the electrodes, ensuring efficient particle removal and reducing system maintenance requirements.

What happens when iron rod rubbed with wool cloth?

The iron rod becomes shinier and the wool cloth wears out. If you rub the same wool cloth on a hard rubber rod, the rod will become charged with static electricity and you will be able to pick up small bits of paper with it---whoopee!

What does static post mean?

A static post is a type of online content that remains fixed on a webpage and does not change dynamically. It is not updated frequently and retains its original form for an extended period. Static posts are commonly found on websites and blogs.

Is iodine an electrical conductor?

Iodine, either in its solid state or dissolved in alcohol, is not a conductor of electricity.

What will happen if you rub a balloon on woolen cloth?

Rubbing a balloon on woolen cloth will generate static electricity on the surface of the balloon. The balloon will then have a negative charge, attracting positively charged objects nearby, due to static electricity buildup.

Why Alloys of metals have greater resistivity than their constituents?

Resistance is due to scattering of conduction electrons. A metallic crystal can be viewed simplistically as a periodic array of ions with a cloud of delocalised conduction elections. The electrons do not scatter of the ions themselves because the crystal is periodic. There are two significant causes of scattering: 1. scattering off vibrations of the atomic lattice (phonons). This contribution to the resistivity is proportional to temperature. 2. scattering off defects in the crystal. At low temperature, this is the cause of a finite 'residual resistivity'. The two terms add linearly Rtotal = R1(T) + R2 Cold working a metal will introduce defects and thus lead to an increase in R2. Conversely, annealling the metal at high temperature will remove defects and reduce the residual resistivity.

What equation is used to describe the electric strength at a point in space?

The electric field strength at a point in space is described by Coulomb's law, which states that the electric field E at a point due to a source charge Q is given by E = k * Q / r^2, where k is the electrostatic constant and r is the distance from the source charge.

What happens to the charges in your hair and a balloon if you rub them together?

When you rub a balloon on your hair, electrons transfer from your hair to the balloon, leaving your hair positively charged and the balloon negatively charged. This creates static electricity, causing the balloon to stick to your hair due to the opposite charges attracting each other.

What is the resistance of a connecting wire?

The resistance of a connecting wire can vary depending on its material, length, and thickness. In general, wires with a higher resistance will impede the flow of electrical current more than wires with lower resistance. It is important to consider the resistance of connecting wires in electrical circuits to ensure proper functionality.