Electric charges/fields

Front

What is an electric field?

Back

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

Front

What is the relationship between electric field strength and distance from the charge?

Back

The electric field strength decreases as the distance from the charge increases.

Front

What is the formula for calculating the electric field (E) due to a point charge (Q)?

Back

E = k * |Q| / r^2, where k is Coulomb's constant, Q is the charge, and r is the distance from the charge.

Front

What is the principle of superposition in electric fields?

Back

The principle of superposition states that the total electric field created by multiple charges is the vector sum of the electric fields created by each charge individually.

Front

What is the difference between conductors and insulators in terms of electric charge?

Back

Conductors allow electric charges to flow freely, while insulators do not allow charges to flow easily.

Front

What is Coulomb's Law?

Back

Coulomb's Law states that the force (F) between two point charges is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them: F = k * |q1 * q2| / r^2.

Front

What is the SI unit of electric charge?

Back

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

Front

How does the electric field behave between two parallel plates?

Back

The electric field between two parallel plates is uniform and directed from the positive plate to the negative plate.

Front

What happens to the electric field strength as you move away from a charged plate?

Back

The electric field strength decreases as you move away from a charged plate.

Front

What is the significance of the sign of a charge?

Back

The sign of a charge indicates its type: positive charges repel other positive charges and attract negative charges, while negative charges repel other negative charges and attract positive charges.