If I have 3 naded wires copper

[Alfcon]

Hi, if I have 3 naded wires copper, Tin and Lead wrapped into one cable and I run 12v through it how do I work out the amount of resistance I get and the total voltage at the other end?

 

[vk6kro]

Hi, if I have 3 naded wires copper, Tin and Lead wrapped into one cable and I run 12v through it how do I work out the amount of resistance I get and the total voltage at the other end?

You mean insulated wires?

You work out the resistance of each wire (using the resistivity formula) and then the combined resistance of the wires in parallel if they are connected in parallel.

The voltage out depends on the current, of course.

 

[oswaler]

Hello,

To calculate the resistance of a wire, you will need to know the length, cross-sectional area, and resistivity of the material. In this case, we can assume that the length and cross-sectional area are the same for all three wires since they are wrapped together. However, the resistivity will be different for each material (copper, tin, and lead).

Once you have the resistivity values for each material, you can use Ohm's law (V=IR) to calculate the resistance for each wire. Then, you can add the resistances together to get the total resistance of the cable.

To calculate the voltage at the other end, you can use the voltage divider formula (V2 = V1(R2/(R1+R2))), where V1 is the initial voltage (12V in this case), R1 is the resistance of the first wire, and R2 is the combined resistance of the remaining two wires.

I hope this helps. Let me know if you have any further questions.