The factors that affect the resistance in a wire.

The factors that affect the Resistance of a Wire


Aim of investigation
The key factor that I will investigate is how the length of the wire will affect the resistance.

My Prediction
I predict that as the length of the wire increases, so does the resistance.

Background Knowledge
What is resistance?
Resistance is the force, which prevents the flow of electrons (current) through an electrical conductor. Resistance is measured in ohms. Ohm’s law was named after its discoverer George Ohm; he discovered that the amount of current flowing through a circuit is directly proportional to the volts impressed on the circuit. George Ohm discovered a rule for working out the resistance of a circuit:
R=V/I
V = volts
I = current
R = resistance
Resistance occurs when the negatively charged electrons (tiny negatively charged particles) travelling along the current in the wire, collide with the positively charged atoms. These collisions slow down the flow of electrons, w...