Chapter 8.2 - Coloumb's Law

Question 1

Define Coulomb’s Law

Answer 1

For two charged objects that are much smaller than the distance between them, the force between them varies directly as the product of their charges and inversely as the square of the separation distance.

Question 2

What is the Expression of Coulomb’s Law?

Answer 2

F = (Charge 1 X Charge 2) / (Distance Squared) and this is all times the constant K (which is huge)

Question 3

What is the unit of charge called?

Answer 3

A Coulomb, abbreviated C

Question 4

What holds the electron in orbit about the proton/neutron nucleus?

Answer 4

An electrical force

Question 5

Coulomb’s law is similar to which of Newton’s laws?

Answer 5

Newton’s law of gravitation for masses

Question 6

What is the most importance difference between gravitational and electrical forces?

Answer 6

The electrical forces may be either attractive or repulsive, whereas gravitational forces are only attractive.

Question 7

Does an electron attract the proton with less force, more force, or the same amount of force as the proton attracts the electrons?

Answer 7

According to Newton’s third law, they pull on each other equally.

Question 8

What is Electrical Polarization?

Answer 8

Molecules “centers of charge” are moved. The positive part of the atom/molecule is attracted while the negative part is repelled (or vice versa)