Electricity and Magnetism

Gamma, X-Ray, Ultraviolet, Visible, Infrared, Microwaves, and then Radio waves. (from smallest to largest)

The side of any diode that must be negative in order for the diode to conduct is the "cathode".

Electromagnetic refers to the interaction between electrically charged particles and magnetic fields. It includes phenomena such as light, radio waves, and X-rays, all of which are forms of electromagnetic radiation. Electromagnetic forces are responsible for the behavior of charged particles in motion.

Current, not voltage is what hurts.

A common AAA, AA or D battery puts out 1.5V. Putting your fingers on both ends of the battery, you will not feel anything.

Put your tongue on a 9V battery and you'll get a little kick... but that's another story.

Find the game "Lighting Reflexes" Fun little game that may answer your questions better than I.

Electricity travels around your home safely through insulated wiring that prevents the flow of current to unintended paths, such as through the walls or to people. Circuit breakers and fuses help protect against overloads and short circuits, cutting off the power if needed. Grounding systems also help direct excess electricity safely into the ground.

Soft iron cannot be made into a permanent magnet because it does not have the ability to hold its magnetism once an external magnetic field is removed. Soft iron has a high magnetic permeability, allowing it to easily magnetize and demagnetize, which makes it useful in electromagnetic applications such as electromagnets. Permanent magnets, on the other hand, are typically made from materials with high coercivity, which enables them to retain their magnetism once magnetized.

Electricity plays a crucial role in communication by transmitting signals through various devices such as telephones, computers, and radios. Signals are converted into electrical impulses that travel along wires or through wireless networks to convey information like voice, data, or video. In this way, electricity enables the functioning of communication systems by providing the energy necessary to power and transmit signals between devices.

Scientists have found the there bacteria in Human urine that has electric properties. Urine containe electrolytes. It has been predicted that "smart Toilets" will be able to draw off the electrolytes in the urine soon enough.

A magnet cannot stop an electric current, but it can influence the flow of the current. Moving a magnet near a wire carrying an electric current can induce a voltage in the wire, which can affect the behavior of the current.

Yes, electric currents generate magnetic fields. This is described by Ampere's law in electromagnetism, stating that a current-carrying conductor produces a magnetic field around it. This relationship between electric currents and magnetic fields is fundamental to the operation of electromagnets and many electronic devices.

When electricity passes through your muscles, it disrupts the normal flow of signals from your brain to your muscles, causing them to contract involuntarily. This phenomenon is known as electrical muscle stimulation and is commonly used in physical therapy and fitness training to help strengthen muscles and improve circulation.

When electricity comes in contact with your muscles, it can disrupt the normal flow of signals between your nerves and muscles. This can lead to involuntary muscle contractions or even paralysis, depending on the intensity and duration of the electrical shock.

Soft iron does not retain magnetism. It can be magnetised and demagnetised quickly and easily. Used as a core for transformers.

'Soft' probably relates to it's submission, when exposed to magnetism. It 'gives in' without too much fuss.

A conductor is any substance that has 1 to 3 electrons in its outer shell. This includes many metals. Any most salts that are dissolved into water.

Common electrical connections are made from copper, gold and silver.

Yes, metal pipes are conductors because they are materials that allow the flow of electricity through them. Metals, in general, are good conductors of electricity due to their free-flowing electrons within their structure.

There is no specific data provided for the exact number of people killed by electricity in Scotland over the last 5 years. However, fatalities due to electricity are relatively rare in Scotland compared to other causes of death.

There were an average of 400 electrocution deaths per year in the United States over the last 5 years, according to the National Safety Council. This includes deaths related to contact with electrical sources in various settings like home, workplace, and outdoor environments.

Electricity has enabled the development of various devices and technologies such as telephones, computers, and the internet, which have revolutionized communication by allowing for faster, more efficient, and widespread information exchange. By providing power to these devices, electricity has played a crucial role in expanding connectivity and facilitating real-time communication on a global scale.

Since electricity is energy, it has only one type. Therefore, some electricity cannot be more efficient than others because all electricity is the same. However, some devices use that same electricity more efficiently than others.

A 3 kW fire uses 3 kilowatt-hours (kWh) of energy for every hour it runs. In 5 hours, the total energy used would be 3 kW x 5 hours = 15 kWh.

A "Volta's Pile" or "Voltaic Pile" consisted of discs of zinc and copper with pieces of cardboard soaked in brine between the metal plates.

It was the first "wet cell battery". This principle is used similarly today but the metals and fluids are quite different.

The first electrical circuit was created by an Italian physicist named Luigi Galvani in the 1780s. He discovered a frog's leg would twitch when touched with two pieces of metal.

His work was taken up by Professor Alessandro Volta who first invented the "Voltaic Pile".

It is not recommended to use a corroded battery as the corrosion can cause damage to the battery's casing and potentially leak harmful chemicals. It's best to dispose of corroded batteries properly and replace them with new ones.

Galvanized nails are needed for a lemon battery because they are coated with zinc, which serves as a more reactive metal that can participate in the electrochemical reactions with the citric acid in the lemon, helping to generate electricity. This reaction is essential for creating the flow of electrons needed to produce a current in the lemon battery.