2006-11-29 07:37:27 · 5 answers · asked by adzmarch 1 in Science & Mathematics ➔ Engineering
Current is the rate at which charge moves past a point on a circuit.
Therefore the correct formula is:
(Current) = (Charge) / (time)
Note that the definition of Ampere is "One Coulomb per second".
2006-11-29 15:29:48 · answer #1 · answered by CanTexan 6 · 0⤊ 0⤋
There are several, V= I * R (as explained above)
P= V * I for single phase where P= Power in watts
I= current in amps
V= Volts single phase
Three Phase Power = Sqrt(3) * V * I , where V is the phase to phase voltage such as 208 Volts, or 480 Volts depending on the system.
2006-11-29 08:30:43 · answer #2 · answered by Anonymous · 0⤊ 0⤋
You could also use the power equation depending on which paramaters you have as knowns. P=IE, therefore I=P/E.
So if you know that you are using US power (120V) and have say a 1200Watt light bulb (and can still see after turning it on), then you will find that 1200W/120V=10A.
2006-11-29 08:30:20 · answer #3 · answered by EE dude 5 · 0⤊ 0⤋
Commonly reffered to as Ohms law -
V=I*R which can be converted to -
I (current in Amps) = V (voltage in volts) / R (resistance in Ohms)
2006-11-29 07:42:44 · answer #4 · answered by Xander 2 · 0⤊ 0⤋
I is current. V is voltage. R is resistance.
I=V/R
2006-11-29 07:42:42 · answer #5 · answered by Jud R 3 · 0⤊ 0⤋