Again this resistivity for the 28 gauge in comparison to the resistivity for the 32 gauge is the same, where very small decimal places are slightly out this investigation led to determining a good value for the resistivity by using two wires of different dimensions. For example, when the length of the wire is 20cm the resistance is 314 ohms when the length of the wire is 40cm the resistance is 618 ohms, which is roughly double in my main investigation i will see if this observation applies to my results. An investigation to find the resistivity of wires the experiment the experiment that was used to obtain the results was very simple the voltage and current were measured whilst varying the length of wire the results for voltage and current were recorded along with the diameter of the wire.
The resistance of a wire is given by the equation r = ρl / a where ρ is the resistivity of the metal from which the wire is made, l is the length of the wire and a is its cross-sectional area using the circuit below, you will make measurements of current and voltage for different lengths of wire.
Investigating resistance of a wire essay examples - investigating resistance of a wire introduction this investigation is about find the resistance of a wire resistance is the slow-down of the flow of an electric current around a circuit so that energy is required to push the charged particles around the circuit. Resistance of a wire investigation essay example - resistance of a wire investigation electrical resistance is the property of any object or substance of resisting or opposing the flow of an electrical current. The temperature has the same detrimental effect that a thicker wire does causing more collisions and causing greater resistance to the flow of current i will be testing overall for the resistivity of the wire over different distances of wire aim my aim is to investigate the resistance of a wire over set distances incrementing every 50mm. To compare and contrast the resistivity of the wire investigated with the resistivities of contemporary wires available today in order to conclude whether it is made from a modern alloy, i have pasted a table from a datasheet book containing the resistivities of the different types of modern wires available today.
Investigation of the resistance of a wire in this investigation i am going to investigate what affect the resistance of a wire electricity flows in metals metal wires are made of millions of tiny metal crystals each crystal’s atoms are arranged in a regular pattern. A possible workaround both these problems can be to use a thread to run along the nichrome wire and then measure the thread to determine the length of the nichrome wire used another limitation to the procedure of the experiment is the assumption of the electrical resistivity of the nichrome wire. We will write a custom essay sample on nichrome wire by determining its resistivity another limitation to the procedure of the experiment is the assumption of the electrical resistivity of the nichrome wire the actual range is 100 to 150 (×10-6 â¦m) but the median, 125 was assumed planning an investigation the resistance of a. Resistivity investigation user description: an investigation that aims to identify the material of an unknown wire by finding its resistance, length and cross-sectional area. I will be testing overall for the resistivity of the wire over different distances of wire aim my aim is to investigate the resistance of a wire over set distances incrementing every 50mm.
Read this essay on investigation of the resistance of a wire come browse our large digital warehouse of free sample essays investigating the resistivity of a wire for them, the known evil is preferable to the unknown for anyone to resist a change, there obviously has to be a change these new conditions are the events that occur. The value of the resistivity will classify the wire’s material hypothesis/theory: as the old saying goes, you can’t judge a book by its cover the material that makes up an unknown wire can’t be identified and confirmed simply by its appearance. After i have found the resistivity of this wire, i will compare and contrast it with other resistivities of the different types of contemporary wires available today in order to interpret and conclude whether it is made from a modern alloy theory an electric current in a wire is the passage of moving charge through the material. The diameter of the wire is also going to stay the same to ensure a fair investigation for our investigation we're investigating the resistance of a wire with a surge of current we're going to connect the wire to the power source but with that we connect an ammeter and voltmeter to be accurate.
The resistance of a wire is given by the equation r = ρl / a where ρ is the resistivity of the metal from which the wire is made, l is the length of the wire and a is its cross-sectional area. Wire length is also another determining factor of wire conductivity, as a general rule the longer the wire is the further the current of electrons will have to travel meaning that the current will drop due to the larger amount of wire creating more resistance. The aim of this investigation that i am about to embark on is to research into the resistivity of a wire found on an ancient mummified persian princess who according to one translation is a daughter of the king xerxes which was about 2,600 years ago.