HOW DOES THE LENGTH OF A WIRE AFFECT ITS RESISTANCE?
INTRODUCTION
Resistance is the property that transforms electrical energy into heat energy, in opposing electrical current. A good conductor has a low resistance and a poor conductor has high resistance. The resistance of a wire of a certain material
. increases as its cross-section area decreases,
2. depends on the material
AIM
My aim is to find how the electrical resistance of a wire changes in relationship to its length.
PREDICTION
My prediction is that if the length of a wire increases the resistance increases. I also predict that the rate at which the resistance of the wire increases will be directly proportional to the length. I predict this using the idea of free electrons, a property of the atoms of all conductors is that they have free electrons in the outer shell of their structure, as a result the outer electrons are able to move about freely even in a solid (shown below).
INTRODUCTION
Resistance is the property that transforms electrical energy into heat energy, in opposing electrical current. A good conductor has a low resistance and a poor conductor has high resistance. The resistance of a wire of a certain material
. increases as its cross-section area decreases,
2. depends on the material
AIM
My aim is to find how the electrical resistance of a wire changes in relationship to its length.
PREDICTION
My prediction is that if the length of a wire increases the resistance increases. I also predict that the rate at which the resistance of the wire increases will be directly proportional to the length. I predict this using the idea of free electrons, a property of the atoms of all conductors is that they have free electrons in the outer shell of their structure, as a result the outer electrons are able to move about freely even in a solid (shown below).
