OHM’S LAW

Georg Ohm

Circuit boards in computers work because of the relationship between

potential difference Current Resistance

Ohm’s Law

Potential Difference (V)

Current (I)

Resistance R

Ohm’s Symbol (Ω)

Short Circuit

Sometimes a wire’s insulation breaks down or another problem develops that allows the electrons to flow through a device along a different path

It often causes an excess of current

The device will not work

Often causes and increase in heat and fire

Short Circuit

When a power line has been severed and the flow of electrons has been interrupted

If you are in contact with the wire it will transfer the electrons and can kill you

The rubber on your tires will act as an insulator and stop the flow

Short Circuit

When using the sigmatron circuit boards the light will turn on and the voltage will immediately drop when a short circuit is created

If you create a circuit with no load = short circuit

You must have a load to use the electrons that are flowing

Fuses and Circuit Breakers Fuse- is a safety device in an electric

circuit that has a metallic con