Electrical Equations

[ToastBucket]

I only know of one. It might not even be right. I=R/V. It's used to find out how much resistance you need I think. Post more equations, what the variables stand for, and what they're used for.

 

[jleemero]

Y'all needs some EE 101

 

[Hermaphroditus]

I only know of one. It might not even be right. I=R/V. It's used to find out how much resistance you need I think. Post more equations, what the variables stand for, and what they're used for.

Ohm's law:
V = I * R
You almost had it. It's actually I = V/R

P = V * R
P = (I^2) * R

Those are for power (P) in Watts.

I is the current in Amperes.
V is the voltage in Volts.
R is the resistance in Ohms.

Remember when working with Ohm's law, you may deal with Kohms, etc, so you will have to convert it into the base unit.

Resistance in series:
R1 + R2 + R3 ... + RN = Rtotal

Resistance in Parallel:
1/(1/R1 + 1/R2 + 1/R3 ... + 1/RN) = Rtotal

This link has some essentials.