Electrical Safety Awareness

OHM’S Law

WIth any two inputs of a circuit you can find the third input.

V=IR or R=V/I or I=V/R

Ohm’s Law is a formula used to calculate the relationship between voltage, current and resistance in an electrical circuit.

To students of electronics, Ohm’s Law (V = IR) (volts=Current *Resistance

Quantity	Ohm’s Law symbol	Unit of measure (abbreviation)	Role in circuits
Gerilim	V	Volt (V)	Pressure that triggers electron flow
Current	BEN	Ampere, amp (A)	Rate of electron flow
Rezistans	R	Ohm (Ω)	Flow inhibitor

Examples with 12 volt battery

12Volts=

You can also use simple equations to figure the power output of a circuit.

P=VI , Power = Voltage * Current

•When the human body contacts an electrical circuit, the body closes the loop to ground

•Electricity will pass through the human body to the ground

•Severity of the injuries are based on

•The amount of electricity that passes through the body

•The length of time the body is in contact with the circuit

•The path the electricity takes through the body

“It is not the voltage that kills you it’s the amps”

1 amp = 1000 milliamps

•Voltage is the force that moves electricity through circuit also known as electromotive force

•High Force = High Voltage

•Low Force = Low voltage

•> 600 volts is considered high voltage

•Freezing Affect •A “Freezing” effect results when the electric shock causes the

muscles to contract.

• The longer the exposure, the greater the risk of death