Current : Base Electronics: 4

This tutorial introduces the concept of electrical current, using Niagara Falls as an analogy to explain the flow of electrons. It defines the unit of measurement for current, the Coulomb, and explains how it relates to electron charge. The tutorial further explains that an ampere, or amp, is the flow of one Coulomb of charge per second. Practical examples of amperage in everyday devices, such as car batteries and blenders, are provided. The lesson concludes with a recap and a preview of the next topic: resistance.

What analogy is used to explain the flow of electrons in a circuit?

• A river flowing through a valley

• Water flowing over Niagara Falls

• Sand flowing through an hourglass

• Wind blowing through trees

How many electrons are equivalent to one Coulomb of charge?

• 6.28 x 10^19

• 6.28 x 10^18

• 6.28 x 10^17

• 6.28 x 10^16

What is the unit of measurement for electric current?

• Ohm

• Ampere

• Watt

• Volt

Which of the following devices typically uses around 11.5 amps?

• A computer

• A car battery

• An LED light

• A super blender

What is the symbol used to represent an ampere?

• C

• A

• V

• W