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Electronic Circuitry

KeyWords

Voltage

Curreat

Resistance

Power

Laws

V – Voltage

I – Current

R – Resistance

P – Power

Ohm’s Law

V=I*R

V – Voltage

I – Current

R – Resistance

P – Power

Watt’s Law

P=I*V

P – Power

Unit

If you know

 I & R Current & Resistance

Then 

 V = I * R  |  P = I² * R

 I = V / R

 R = V / I

more….

Unit

Voltage

Current

Resistance

Power

Unit Symbol

V

I

R

P

Measurements

Volts

Amps

Ohms

Wats

Measurement Symbol

V

A

Ω

W

Series

Current is the same

Voltage adds up

 

Parallel

Resistance Goes down

Current adds up

voltages is the same

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