What is IT, I1, I2, and I3 in a circuit.

I came upon a sheet about circuits in science class and there were questions like "Label IT in the following schematic circuit." What is it??

I = Current

IT = Total Current
I1 = Current 1
I2 = Current 2
I3 = Current 3

If a circuit is connected from one end all the way back around (connected in 1 path to the end and back) Then it is a (SERIES) Circuit...http://www.printedcircuit1.com/category/…

If a circuit is connected from one end and then goes across one path and verticle or horizontally into multiple straight paths, then it is a (PARALLEL) Circuit...

http://www.google.com/imgres?imgurl=http…


(NOW)

Once you have decided which kind of circuit it is, follow these equations.

Remember: RIV/IVR or as I call it (REVIVER)

Series:
R = add all resistance in the form of Ohms or Kila Ohms
I = all current is equal
V = add all voltage

Parallel:
I = add all current
V = all voltage is equal
R = 1/((1/r1)+(1/r2)+(1/r3)) plug each resistance in and divide it by 1




YOUR ANSWER:

When looking for current, follow the instructions above.

If it is a series circuit, then IT = I1 = I2 = I3 (IF YOU DO NOT HAVE ANY CURRENT LABELED, THEN TAKE THE (RESISTANCE) and DIVIDE IT BY THE (VOLTAGE)

I = Voltage divided by Resistance

V=I * R
I = V/R
R = V/I


If it is a parallel, then you must add up the current (follow the same step above, to get the current,
I = V/R...




if you dont understand, or need more information, then just e-mail me .... nathanbonnfire@yahoo.com

Current=I I T is total current