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# Who is more likely to be hurt a bird sitting on a electricity wire or a boy flying a kite near an electricity wire?

Only the boy, flying a kite near an electricity wire, is in danger of being electrocuted. Especially if the kite string is damp, and the boy is standing on wet grass and wearing damp footwear.

# Which would cause most of the free electrons to move in a conductor to move in the same direction?

In the theory of electricity, you must have a current for electrons to all move in one direction.

# Why is lead a poor conductor of electricity but a good conductor of heat?

The reason for this is that lead readily reacts with the atmospheric oxygen to forms lead oxide. Lead oxide that has been formed does not have any free electrons. Therefore, it is not able to pass electricity. As, lead exists in the form of lead oxide in which, free electrons are not available.

# What word describes electricity as it occurs in nature?

• lightning
• piezoelectricity
• triboelectricity
• pyroelectricity
• electrogenic (in fish)
• whistlers
• etc.

# Current electricity and words that describe it?

Current electricity refers to the flow of electric charge (usually in the form of electrons) in a closed circuit. It is characterized by the movement of charged particles in a specific direction, creating a continuous flow of electric current. Some words that describe current electricity include dynamic, flowing, directional, and circuitous.

# Does work done in moving a charge from infinity to a given point involves any acceleration?

No, work done in moving a charge from infinity to a given point does not involve any acceleration. Work is defined as the product of force and displacement, and in the case of moving a charge, the force is constant along the path. Since acceleration is the rate of change of velocity, and there is no change in velocity in this case, there is no acceleration involved.

# Why tungsten in cathode ray tube coated with thorium oxide or barium oxide?

Tungsten is used in the cathode ray tube (CRT) because it has a high melting point and good thermionic emission properties, which means it can easily release electrons. The thorium oxide or barium oxide coating on the tungsten helps to improve electron emission efficiency by reducing work function and enhancing electron current. This combination allows for better electron beam production in the CRT.

# How superconductivity relates to ohm's law?

Ohm's law states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to its resistance. Superconductivity is a property observed in certain materials where they exhibit zero electrical resistance below a critical temperature. In superconductors, Ohm's law is not applicable as there is no resistance to impede the flow of current, resulting in the potential for an infinite current to flow in a closed circuit without needing a voltage difference.

# What is the scientific name of a substance that lets electricity flow through it?

A substance that lets electricity flow through it is called a conductor (or sometimes, to be more explicit, it is called an electrical conductor). Substances which do not permit the flow of electricity are called insulators.

# Why do you need power lines?

Power lines are necessary for the transmission of electricity from power plants to homes, businesses, and other places where it is needed. They allow for the efficient distribution of electricity over long distances, ensuring that electricity can reach even remote areas. Power lines also enable the integration of different sources of electricity generation, such as wind and solar, into the overall power grid.

# How the internal energy of air can be increased by?

The internal energy of air can be increased by adding heat to it. When heat is added to air, the energy of the air molecules increases, causing them to move faster and have higher kinetic energy. This increase in kinetic energy results in an increase in the internal energy of the air.

# Will a copper wire not carrying a current be attracted to a magnet?

No, a copper wire that is not carrying a current will not be attracted to a magnet. Copper is not a magnetic material, so it does not interact with magnetic fields in the same way that magnetic materials like iron or nickel do.

# What does the nucleus of one atom want to do to the electrons of a nearby atom?

The nucleus of one atom wants to attract or pull the electrons of a nearby atom towards itself. This attraction is due to the opposite charges of the protons in the nucleus and the electrons.

# What alloy has 24 percent cobalt?

One alloy that contains 24% cobalt is cobalt-chromium-molybdenum (CoCrMo). This type of alloy is commonly used in dental implants, prosthetics, and metal-on-metal hip replacements due to its high strength and corrosion resistance.

# What are the two main types of bridges in electricity?

The two main types of bridges in electricity are Wheatstone bridge and Kelvin bridge. The Wheatstone bridge is used to measure resistance while the Kelvin bridge is used to measure low resistance values. Both bridges are commonly used in electrical and electronic circuit analysis for accurate measurements and fault detection.

# Why tungsten emit light when heated?

Tungsten emits light when heated because of its high melting point and conductivity. As it heats up, the tungsten atoms gain energy and begin to vibrate, causing the release of photons in the form of visible light. This light emission is what is commonly observed in incandescent light bulbs and other tungsten-based light sources.

# What is the device on the chimney called?

The device on a chimney is called a chimney cap. It is installed on top of the chimney to prevent animals, debris, and rainwater from entering the chimney while still allowing the smoke and gases to escape.

# Can a computer cause a fire?

Yes, a computer can potentially cause a fire if there is a malfunction of the power supply, overheating of components, or electrical shorts. However, such incidents are relatively rare and can be mitigated by using proper equipment, ensuring proper ventilation, and regular maintenance of the computer.

# When an electromagnetic wave meets a reflecting surface the direction taken by the reflected wave in determined by?

the law of reflection, which states that the angle of incidence is equal to the angle of reflection.

# How does heat radiation travel?

Heatradiations are part of the electromagnetic spectrum, ranging in red and infrared region.

hope this helps

# A body is thrown vertically upward What is the magnitude of its acceleration?

A projectile fired directly upwards has no positive velocity. Its only velocity is attributed to the force of gravity, which is -9.8 meters per second squared.

# Why did luigo galvani do the frogs legs experiment?

Luigi Galvani didn't intentionally do the frog leg experiment. He was working with static electricity by using frog skin. When he took the metal scapel that he was using during the static electricity experiment, it became charged with static electricity. When he identically touched one of the the frogs' nerve, the frog leg twitched. This helped us later understand that our nervous system practically works on electrical impulses/signals.

# What is the Hypothesis of potato battery?

do you mean 'who is the principal of the school of potato batteries?'

# Is yarn a conductor?

A conductor (of an electrical charge) is a material which has "movable" electrical charges, or electrons.

As a general rule, materials which conduct electricity are metals. Copper is the most commonly used in wires, silver is the best conductor--but rather expensive to commonly use. Gold is also a great conductor, but again, an expensive metal to use. Although, gold is often used in electronics to make electrical connections (such as gold plated RCA plugs for carrying video and audio signals. Also used on the more high-end printed circuit boards).

However, there are other materials which can conduct electricity--some chemical salts, graphite, and plasma (which is ionized gas)

Therefor, yarn is generally not a conductor of electricity, as it is made from plastics (acrylic yarn), animal fibers (wool, alpaca, yak, cashmere, etc), and plant material (cotton, linen, flax, etc.). Silk (from silkworms), does not conduct electricity, unless it is a specially made--woven with silk and copper threads.