Developed by: JOHNNY FREESE WCED: METRO SOUTH EDUCATION DISTRICT WCED Metro South Education District Electricity An Introduction

Output Devices Light bulb motor heater buzzer

Motors are used in many machines

How does electricity work?

Power Source 1,5 Volts 1,5 Volt Cell

A Basic Electric Circuit 1,5 V cell Wire Switch Light Bulb INPUT OUTPUT CONTROL

What happens inside a battery?

Magnets: Opposite poles attract

Magnets: Like poles repel

Millions of negative charges repelling each other Electric Pressure = VOLTAGE ee e e e e e e e e e e e e e e e ee e e e e e e e e e e e e e ee e e e e e e e e e e e e e ee e e e e e e e e e e e e e ee e e e e e e e e e e e e e ee

Voltage Current Resistance

Voltage, Current and Resistance Voltage CURRENTCURRENT Resistance

The language of Electricity Voltage (V) IS measured in Volts (V) Current ( I ) IS measured in Amperes (A) Resistors (R) is measured in Ohms (Ω)

In Conclusion Voltage pushes Current through Resistors to make our Machines work

Knowing your basics will make you fly like an albatross!