PHYSICS CHAPTER 1

What is an electric charge?

An electric charge is a property of subatomic particles that causes them to experience a force when placed in an electromagnetic field.

What are the two types of electric charges?

The two types of electric charges are positive and negative. Like charges repel each other, while opposite charges attract.

What is Coulomb's Law?

Coulomb's Law states that the force between two charges is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them.

What is an electric field?

An electric field is a region around a charged object where other charged objects experience a force.

How is electric field strength calculated?

Electric field strength (E) is calculated using the formula: $E = \frac{F}{q}$, where F is the force experienced by a charge q.

What is the unit of electric charge?

The unit of electric charge is the coulomb (C).

What is the significance of an electric field line?

Electric field lines represent the direction of the electric field; they point away from positive charges and toward negative charges.