Electricity: Chapter 9

What is the study of the nature, behavior, and uses of static electricity and related phenomena called?

Who first discovered charge?

What did William Gilbert think charge was, and what did he call it?

• A fluid, which he called 'electricity'

• An inherent property of metals, called magnetism

• An abstract force, called gravity

• A chemical residue, known as phlogiston

What is the property that allows particles to attract and repel other charge particles by the electromagnetic force?

What are the two opposite types of charge?

What is the SI unit of electric charge?

• Coulomb

• Volt

• Ampere

• Watt

Which statement best describes the law of electric charges?

• Like charges repel and opposite charges attract with a force that is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

• Only opposite charges interact with each other.

• Electric charges do not interact with each other.

• The force between charges is independent of the distance between them.

What is the law that states the strength of attraction or repulsion between two charged objects is directly related to the strength of the charges and inversely related to the square of the distance between them?

• Coulomb's Law

• Newton's Law

• Ohm's Law

• Faraday's Law

What is the formula for the law of electric force?

• The formula for the law of electric force is F = k * (|q1 * q2| / r^2), where F is the force between the charges, k is Coulomb's constant, q1 and q2 are the magnitudes of the charges, and r is the distance between the centers of the two charges.

• The formula for the law of electric force is F = k * (q1 + q2) / r^2.

• The formula for the law of electric force is F = k * (q1 * q2) * r^2.

• The formula for the law of electric force is F = k / (|q1 * q2| * r^2).

An electric field is modeled as the effect of a charged object on the space around. True or False?

• True

• False