resistance
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Investigation to find out out how the length of a wire affects the resistance of a wire.
Aim to find out ot how the length of a wire affects resistance
I predict that the longer the wire, the higher the resistance. This is because in a longer wire, there are more wire particles that electrons can bump into. Resistance is caused by electrons colliding with wire particles. If there are more wire particles, the chance of an electron colliding with a wire particle will be higher.
In a longer circuit, it is more of a struggle for electrons to get around the circuit without any collisions. There are many more wire particles (acting like obstacles) to avoid. Electrons cannot increase or decrease speed, but they can collide. They collide with the particles in the wire, therefore less electrons are able to flow than in a shorter length wire. As a result, the ammeter shows a lower current with the same voltage...