ELECTRIC CURRENT

By: Jack Paras, Brandon Raiz, Amani Azeem, Melinda Martin

The Basics• Electric Current-the rate at

which charges pass a given point.

• The number of charges passed is determined by how high the current is.

• Basic unit for measuring currents is an amperes (amps;A).

Making Charges Move• Electric field is set up instantly, and electrons are moving

throughout the wire. • These electrons are commanded by the electric field.

• Light comes on all electrons obey command at same time.

• The current lighting bulb is made quickly even though each electron moves slowly.

AC and DC• There are two types of electric currents.

• AC-Alternating Current (two way)• DC-Direct Current (one way)

• DC charges flow in same direction; AC shift from flowing in one direction to the reverse direction.

• Both currents give you electrical energy.

Direct Current Alternating Current

Wire

Test Quetions1.) True/False: The electric current is the rate at which charges pass through a given point.

2.) True/False: There is only one type of electric current.

3.) Multiple Choice: What is the unit of measurement for electric current?

a.) voltage

b.) photo cell

c.) amperes

d.) charges

4.) How are the current and charges related?

a.) the higher the current the greater number of charges

b.) the higher the current the lower number of charges

c.) the lower the current the higher number of charges

d.) no relation

5.) Short Answer: How many types of electric currents are there?

Explain the difference.