I have a feeling the mueller investigation is about to clash with the trump strongmen and women and america is about to find out what fighting for their democracy looks like i have no idea what. Title resistance and ohm's law investigation: description in science 9 we have discussed factors influencing resistance and ohm's law. 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. Resistance of a wire investigation - sample essay resistance ( ) = resistance of the metal( cm) x length(cm)cross sectional area (cm2) the cross sectional area of the wire is constant, and so is the material i am using. Resistance of a wire through is an insulator conductors intended to have resistance are called resistors (symbol ) voltage- given the symbol v, measured in volts using a voltmeter current- given the symbol i, measured in amperes using an ammeter metallic structure diagram resistance resistance is the ability to prevent or resist the flow of electrical current.
Year 11 resistance of a wire investigation posted: september 1, 2017 resistors are put into electrical circuits to control the flow of current within the components of an electrical appliance. In this investigation, i will set up a simple circuit to be able to read the voltage and current when the length of wire changes, so i then can work out the resistance i will be using constantan wire starting of with 1m length and then decreasing it by 010m intervals down to 020m long. The resistance r is the resistance wire (constantan nichrorome) that you will be trying to calculate set the power supply to 1v this limits the current through the wire in order to reduce any heating effect which may change the resistivity.
Resistance depends on the material the wire is made of the more tightly an atom holds on to its outermost electrons the harder it will be to make a current flow the more tightly an atom holds on to its outermost electrons the harder it will be to make a current flow. A simple investigation of the factors affecting the resistance of a wire. Wire typically has very low resistance, so what you'll most likely end up measuring is the contact resistance ie, the resistance between your multimeter probes and the wire itself might have more resistance than your wire and overshadow it. Wires a and d will go to the power supply (with an ammeter wire in series in this loop wires b and c will go to the voltmeter to measure the voltage drop across the testing material. The resistance of a wire is directly proportional to the length of the wire and inversely proportional to the cross-sectional area of the wire (3) investigation plan.
Resistance in a wire investigation divided by the current, in amperes (i) - ohm's law as the length of the wire is increased the number of collisions the current carrying charged particles make with fixed particles also increases and therefore the value for the resistance of the wire becomes higher. • • title: investigation on the resistance of the wire variables spider diagram iameter of wire temperature urrent voltage of battery resistance of wire length of wire vi # r • introduction: resistance is the ratio of current and potential difference across a wire. Investigation: how does the length of a conductor affect the resistance of the conductor hypothesising, identifying variables, following instructions, drawing, observing, describing, analysing, concluding. Any conducting wire has a resistance associated with it and the resistivity of the material is directly proportional to the length of the wire and inversely proportional to the area of the cross section of the wire.
Resistance of a wire investigation this research paper resistance of a wire investigation and other 64,000+ term papers, college essay examples and free essays are available now on reviewessayscom autor: review • february 6, 2011 • research paper • 311 words (2 pages) • 1,122 views. Predict what will happen to the resistance if you change from a copper wire, which is a good conductor, to an iron wire, which does not conduct as well procedure part ii: ohm's law: electricity, magnets, and circuits ( ohm's law. Resistance occurs when the electrons travelling along the wire collide with the atoms of the wire these collisions slow down the flow of electrons causing resistance resistance is a measure of how hard it is to move the electrons through the wire.
Episode 112: resistivity in this episode, students learn how and why the resistance of a wire depends on the wire's dimensions they learn the definition of resistivity and use it in calculations. 92 learners conduct an investigation to determine the emf and internal resistance (r) of a battery they set up a circuit as shown in the diagram below and measure the potential difference using the voltmeter for different currents in the circuit. An increase in temperature of the copper wire will cause an increase in the resistance of the copper wire, and will thereby reduce conductivity , which is the flow of electric current through the wire.
How temperature changes resistance although the resistance of a conductor changes with the size of the conductor (eg thicker wires have less resistance to current flow than thinner wires), the resistance of a conductor also changes with changing temperature. Model the data using a linear fit to determine the relationship between resistance and length of the wire resistance vs area the next step would be to investigate the relationship between resistance and cross sectional area. The possible variables i could use to find out factors affecting resistance are material wire is made of, length of wire, temperature and cross sectional area of wire.
For purposes of electrical fire investigation, the term spark is reserved for particles thrown out by arcs, whereas an arc is a luminous electrical discharge across a gap short circuits and high-current ground faults, such as when the ungrounded conductor (ie, hot conductor) touches the neutral or a ground, produce violent events. The purpose of this investigation is to see how length and thickness of wire affect the dependent variable, resistance prediction i predict that, as the length of the wire doubles, the resistance will also double, but as the cross-sectional area of the wire doubles, the resistance halves. Electricity the resistance of wires-thickness does the resistance of a wire depend on its thickness the resistance of a wire changes if its thickness changes the thinner the wire, the bigger its resistance.