# Describe the law of charges.

## Definition

Description should include- explaining that between magnetic objects, those with like charges repel and those with unlike charges attract
- knowing that the size of the charge and the amount of force produced have a direct relationship
- understanding that force is applied in a direct line between objects
- identifying that the inverse square law of the electrostatic follows the force of attraction
- explaining that the electrostatic force of attraction between two point charges are proportional to the product of the magnitudes.

## Process/Skill Questions

- Who is credited with discovering the law of charges?
- How should objects with similar charges behave with each other, according to the law of charges?
- What are some everyday examples of the law of charges?
- How does the size of a magnetic field relate to charge?

## Related Standards of Learning

## Mathematics

### A.4

The student will solve

- multistep linear and quadratic equations in one variables algebraically;
- quadratic equations in one variables algebraically;
- literal equations for a specified variable;
- systems of two linear equations in two variables algebraically and graphically; and
- practical problems involving equations and systems of equations.

### A.8

The student, given a situation in a real-world context, will analyze a relation to determine whether a direct or inverse variation exists, and represent a direct variation algebraically and graphically and an inverse variation algebraically.

### AII.3

The student will solve

- absolute value linear equations and inequalities;
- quadratic equations over the set of complex numbers;
- equations containing rational algebraic expressions; and
- equations containing radical expressions.

### AII.10

The student will represent, create, and solve problems, including practical problems, involving inverse variation, joint variation, and a combination of direct and inverse variations.

## Science

### PH.6

The student will investigate and understand that quantities including mass, energy, momentum, and charge are conserved. Key concepts include

- kinetic and potential energy;
- elastic and inelastic collisions; and
- mass/energy equivalence.