Electrostatics

No, this statement is not correct. Both an odd or even number of electrons can move when charge is being transferred. The charge transferred depends on the number of electrons moving and their respective charges.

The simple metal foil electroscope has its leaves propelled apart by electrostatic forces repelling each other.

Traditionally gold foil was used as the metal, (for it may be made very thin) but I imagine that today metallized plastic foils are lighter and will achieve greater separation.

But you have to consider the net direction in which the charged foils will exert maximum force against each other.

The difference is that the charging dock has battery in it already and the batterys have to have new ones put in every once in a while

The friction between the drill bit and the relative material it is drilling through.

The electric field due to an electric dipole at a point along its axis is given by the formula: E = (kp)/r^3, where k is the electric constant (8.99 x 10^9 Nm^2/C^2), p is the dipole moment, and r is the distance from the midpoint of the dipole to the point. The dipole moment (p) is calculated by multiplying the magnitude of the charges by the distance between them, so p = 100μC x 0.1m = 10μC.m. Plugging in these values with r = 0.2m, you can calculate the electric field.

1. Smoke particles pick up a negative charge.
2. Smoke particles are attracted to the collecting plates.
3. Collecting plates are knocked to remove the smoke particles.

As long as the electricity is static, it is of little concern. Of course, static today, current tomorrow.

If you are in contact with a large static charge and also with the Earth, the energy can flow through you, and there might be enough to stop your heart.

I heard of a man who picked up two cables to connect them and was cooked. The person in charge said it was static electricity, since the power was then not on. Of course, it is my point that static electricity is merely charge, and the charge (most usually) has to move to hurt you. Moving charges are called electric current.

Yes, static electricity has the potential to ignite natural gas if a spark is produced. It is important to be cautious when working with natural gas and to follow safety guidelines to prevent any accidents.

When you plug something into the wall socket at home, (mains power) you are using alternating current, when you use something powered by a battery, you are using direct current.

When an object has a positive charge, it means that it has an excess of protons compared to electrons. This causes the object to have a net positive charge, making it attractive to objects with a negative charge and repelling other positively charged objects.

A static discharge typically needs to be around 3,000 volts for a human to feel it. The exact voltage threshold can vary depending on factors such as humidity, skin moisture, and individual sensitivity.

When static electricity is suddenly released, it can create a spark or discharge of electricity between two objects. The noise produced is due to the rapid expansion of air and the vibration of surrounding molecules caused by the sudden release of energy. This rapid expansion creates a small shockwave that we perceive as a popping or crackling sound.

If the gravitational force is equal to the electrostatic force, the direction of the charge will depend on the relative signs of the charges. If the charges are of opposite sign, the direction will be attractive (towards each other), and if the charges are of the same sign, the direction will be repulsive (away from each other).

the metal is a conducting metal and when this touches water it becomes the second conductor and so it sends an electrical surge to what ever is touching the water (you!).

Many people have static problems, especially in the winter when the indoor air is very dry. But don't worry, static elimination may be easier than you think. There are many steps you can take to eliminate static electricity, and many static control products available.

Static Elimination Tips

Our expert in static electricity in the electronics industry suggests trying the following to get rid of static electricity problems in your home or office:

1) Increase the humidity in your house and workplace. Air is much drier in the winter, which increases the frequency and severity of shocks. Use a humidifier.

2) Change clothes - switch to natural fibres, since synthetics pick up more of a static charge.

3) Change shoes - there are special conductive shoes in a variety of styles. They are made for people working in the electronics industry. You will need to find a store or catalogue that sells or can order them for you. (Search on line for "esd shoes")

4) If your skin is very dry - try an anti-static hand lotion (also available for the electronics industry.)

Here are 3 more suggestions for static control from other sources:

1) Walk barefoot. (Or, as silly as it may sound, cover your shoes with aluminium foil when possible) to reduce the static build up.

2) Wear a thimble on your finger, or carry a coin, and use them to touch grounded metal objects as often as possible. This will not eliminate the static discharge, but will stop the pain you feel in your fingertips.

3) Be sure to ground yourself before touching sensitive electronic equipment.

The best revision website is BBC Bitesize as it has revision for all ages such as:

KS1

KS2

KS3

GCSE

Scottish Highers

This boy/girl dumb

Sitting on a couch.

Shooting birds.

Eating trees.

Kicking dogs.

Smelling polar bears.

Watching porn.

Driving a cow.

Touching cacti.

Listening to octopi communicate.

Reading this.

All very good non-examples of static electricity!

No, current electricity involves the flow of electrons through a conductor, such as in a wire. Static electricity, on the other hand, is the imbalance of electric charges on the surface of an object, leading to a buildup of charge that can discharge as a spark.

Amps (amperes) measure current flow in a circuit, showing how much electricity is flowing. Watts measure power, representing the rate at which energy is consumed or produced. In simple terms, amps indicate the amount of electricity flowing, while watts indicate how much work or energy is being used.

Just like rubbing your hand on a balloon, the skin of an aircraft can build up a lot of static electricity due to the aerodynamic friction as the airplane flies. Since the tires are rubber, which is an excellent electrical insulator, and the tires are the only part that contact the ground. It is possible for the aircraft to retain this charge well after landing. Anyone or anything that comes into contact with the aircraft could ground the charge & get a good jolt & probably a spark.

Naturally this is of grave concern, as the first thing to touch the aircraft may very well be a fuel hose. The spark generated on discharge could ignite fuel vapors.

To mitigate these risks, most aircraft are equipped with "static wicks" which bleed off this static electricity into the air as the aircraft flies. These will be in the form of small rigid plastic protrusions from the trailing edges of the wings and tail surfaces. There may also be a static wick on the landing gear which discharges static charges into the ground on touchdown. Fuel trucks are also equipped with ground-lines which are connected to the aircraft before fueling takes place.

Additionally, many aircraft which use glass windshields (as opposed to acrylic) may produce and hold a very dangerous charge in that windshield. When cleaning one of these windshields, it is important to first pour a small amount of water onto the glass to dissipate the charge to the rest of the aircraft, otherwise you may receive a very dangerous electrical shock.

It's nothing special. You can just put it in the washing machine, but put it on a delicate setting. Then hang dry. Do not put it in the dryer.