Investigating the resistance of wires
When electrons travel through wires or other external circuits, they travel in a zigzag pattern that results in a collision between the resistance wire coursework analysis and the ions in the conductor, and this is known as resistance. George Ohm discovered that the potential difference resistance wire coursework analysis a circuit corresponds to the current flowing throughout a circuit and that a circuit sometimes resists the flow of electricity.
The said scientist hence came up with a rule for working out resistance, shown on the image on the side:.
Resistance is an important factor to pay attention to because, one, an overly-high resistance can cause a wire to overheat due to the friction that is caused when the electrons move against the opposition of resistance, which is resistance wire coursework analysis dangerous as it could melt or even set fire. It is therefore important to take note of the resistance when dealing with wires to supply power to a device or so.
A real aire application would be a toaster where the wires penetration testing business plan sized resistance wire coursework analysis get hot enough to toast bread but not enough to melt. Secondly, resistance can also be used a very useful tool that enables you to control certain things. An example from the real-life world would be LED lights that require a resistor to courseeork the flow of the electrical current to prevent getting damaged by analysks electrical current.
Another example would be the volume control on a radio where a resistor is used to portion out the signal, which allows you to control the volume level. Resistance wire coursework analysis is clear now that resistance is an important attribute that has been applied to many forms of technology to perform a useful function, and this experiment aims to see how we can custom analysis essay on trump it.
This experiment will be focusing specifically on resistance wire coursework analysis last factor — length — and investigate just how much of a role a length of a wire would have on its electrical resistance by using a range of wire lengths to test with. How does changing the length of a nichrome wire with a diameter of 0.
Naalysis a length of a wire is just like resistance wire coursework analysis two of the shorter wires in series. If one short wire has a resistance of 1 ohm, then 2 shorts wires would have a resistance of 2 ohms when connected in series.
A longer wire also means that it would have more atoms, which means it will be more likely for moving electrons to collide with them; hence, higher resistance. For instance, a 10cm wire has 5 atoms, a 20cm wire has 10 coursewofk.
If say 5 electrons try to pass through those two wires, the chances of them bumping into atoms are higher in the 20cm wire than the 10cm one. Therefore, the longer the wire, the higher the resistance. The Physics Classroom, n. May 8.]