Understanding Electrostatic Forces

What is the force that acts between charged objects?

• Gravitational force

• Electrostatic force

• Frictional force

• Magnetic force

What is the unit of electric charge?

• Coulomb

• Watt

• Ohm

• Volt

What happens to the force between two charges if the distance between them is doubled?

• The force doubles in strength.

• The force remains the same.

• The force between the charges is reduced to one-fourth of its original value.

• The force increases to four times its original value.

What type of charge do protons have?

• Positive charge

• Variable charge

• Negative charge

• Neutral charge

What type of charge do electrons have?

• Positive charge

• Variable charge

• Neutral charge

• Negative charge

What is the principle that states like charges repel and opposite charges attract?

• Ohm's Law

• Coulomb's Law

• Newton's Law

• Faraday's Law

What is the term for the region around a charged object where its electric force can be felt?

• Gravitational field

• Electric field

• Electric potential

• Magnetic field

How do you calculate the electric force between two point charges?

• F = k * |q1 - q2| / r

• F = k * |q1 * q2| / r^2

• F = k * (q1 + q2) / r

• F = k * q1 * q2 * r^2

What is the effect of adding more charge to an object on its electric force?

• The electric force becomes zero.

• The electric force increases.

• The electric force remains the same.

• The electric force decreases.

What is an example of a material that can be charged by friction?

• Wood

• Rubber

• Metal

• Glass