Category: papers title: factors affecting the resistance of a wire must be kept constant to maintain a safe and fair test investigating factors affecting resistance of a wire essay - investigating factors affecting resistance of a wire aim --- investigate what factors affect the resistance of wire, however in this experiment. The classic physics experiment this was designed as an intro for an isa but could be used for this practical in any syllabuss it includes model results, info on variables , anomalous data and graphs. When using a power supply, high currents will cause the safety cut-out on the power packs to automatically switch it off if short lengths of wire are used with relatively high currents and voltages, then significant electrical heating may also occur students should be encouraged to adjust the voltage to keep currents small with. Three sections: biology, chemistry and physics, all questions to be answered coursework b mark the sec nominated investigations according to the agreed criteria enter the marks for each section in the coursework b grid on the cover page of the coursework booklet or resistance of wire / metal of wire / volume. Place a variable resistor in the circuit for safety to ensure that the current did not remain too large, but remained set at the same value throughout the experiment to ensure that the test was fair physics investigation of resistanceaim: to investigate how the electrical resistance of a wire changes in relationship to it´s length. You need control over the voltage applied to the unknown resistance, else it is likely to be destroyed before you can take your measurements your circuit shows a fixed voltage source connected to the unknown r, and with r being unknown you can't know ahead of time whether this voltage will be safe for.
In this article i will investigate what affects the resistance of a wire electricity flows in metals metal wires are made of millions of tiny metal crystals, and each crystal's atoms are arranged in a regular pattern the metal is full of free electrons that do not stick to any particular atom rather, they fill the space. Resistance wire used after preliminary experiment teacher suggests link between resistance and dimensions of a metal student makes full decision about methodology, equipment and materials all choices are fully justified with reference to experimental errors and safety opportunities for observation and assessment of. Wire gets hot 2 pass a current through the wire until the magnet swings away record the values of voltage v across and current i in the wire at this point 3 16 30 air resistance on water jets 8,9 31 electromagnetic propulsion 15 32 flames in electric fields 16 33 water wheels 8,9 34 car safety belts 8,9 35.
If you want to play with a remote controlled helicopter and do a physics eei at the same time - here's an combination when the flow is desirable, and the design safety devices for coping with accidents when the make a simple thermocouple from copper and iron wire (see diagram below) using boiling water and icy. Physics coursework title 2017 using conductors made of children's play ( modelling) dough, investigate quantitatively the effect on resistance, calculated from measurements of voltage across and current through the conductors, of changing the conductor length and obtain data to establish whether dough colour has an. How the length of a wire affects its resistancein my physics coursework i am going to investigate the effect of the length of a wire on its resistance to ensure that my equipment is safe i will switch off the power pack after collecting the necessary results for each length of wire, to prevent overheating of both the equipment.
We got just given our coursework in college and i am utterly clueless on what to do for this i'm supposed to be investigating how changing the length of the wire in a circuit affects its resistance and then calculating the constant resistivity of that wire afterwards can anyone help me out here how do you set. Physics 0625 for examination in june and november 2016, 2017 and 2018 also available for examination in march 2016, 2017 and 2018 in india only proportionality between resistance and length, and the inverse proportionality between resistance and cross-sectional area of a wire 426 electrical working core. 4 wwwgcse-sciencecom gcse gateway science candidate style answers physics candidate a 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) risk to anyone it was a safe method.