Electromagnetism: Coulomb's Law, Electric Potential, and Magnetic Forces

What are the two types of changes that interact in electromagnetism?

Positive and negative charges.

What is the unit of charge?

Coulombs, abbreviated as Q.

According to Coulomb's law, what determines the strength of the electromagnetic force?

The amount of charge and the distance between the charges.

What is the behavior of similar and opposite charges?

Similar charges repel each other, while opposite charges attract.

How many electrons does one Coulomb equal?

6.24 × 10^18 electrons (or protons).

How do Coulomb's Law and Newton's Law of Gravitation compare?

Both are weaker when objects are further apart and stronger with more charge (or mass).

How do Coulomb's Law and Newton's Law of Gravitation differ?

Charges can attract or repel, while gravity always attracts.

What is electric potential?

The potential energy per charge in an electric field.

How is electric potential generated?

By doing work to separate objects with opposite charges or push like charges together.

What are the units of electric potential?

Volts (1 Volt = 1 Joule per Coulomb).

What happens to potential energy when opposite charged objects move together?

It is converted into kinetic energy.

What is current in the context of electricity?

The flow of charged particles, usually electrons, through an electric potential.

What are the units of current?

Amperes (1 Amp = 1 Coulomb per second).

What is the difference between conductors, insulators, and semi-conductors?

Conductors allow electric flow easily, insulators do not, and semi-conductors have properties between the two.

How does a battery work?

A battery converts chemical energy into electrical energy through electrochemical reactions.

How are magnetic force and electric force similar?

Both can exert forces at a distance and have fields associated with them.

How do magnetic force and electric force differ?

Magnetic forces arise from moving charges and can repel or attract, while electric forces arise from static charges.

What makes a magnet different from non-magnet metals?

Magnets have aligned magnetic domains, while non-magnetic metals do not.

What is the relationship between electric fields and magnetic fields?

Electric fields can create magnetic fields and vice versa, which is the basis of electromagnetism.

What are electromagnetism and induction?

Electromagnetism is the interaction between electric and magnetic fields, while induction refers to generating electric current through changing magnetic fields.

What is a wave?

A disturbance that travels from one place to another transporting energy, but not necessarily matter.