Essays Tagged: "Electrical resistance and conductance"
A resistance Investigation
PLANNING:Aim: To find out the affect on the resistance of certain wires when a variable is changed. Are shorter, fatter wires or longer, thinner ... of designing a heating element?Investigation 1) To find out how the length of the wire affects the resistance of the wire.Investigation 2) To find out how the diameter of the wire affects the resista ... sistance of the wire.Prediction:Investigation 1) I predict that as the wire increases in length the resistance (collision of particles causing a decrease in velocity for the moving particle) will incr ...
Subjects: Science Essays > Physics
An experiment to find out if the emotional fluctuation was reflected in biological responses.
otion in laboratory studies. GSR cover two distinct but related phenomena, they are the drop in the electrical resistance of the skin to the passage of an applied current which is discovered by Fere(1 ... ormally occur spontaneously (Montagu, 1958). In our experience, we would focus on the change in the electrical resistance of the sin to the passage of an applied current.Regarding the peripheral mecha ...
Subjects: Social Science Essays > Psychology
An experiment to investigate the factors which affect the resistance in a wire.
r is placed in a circuit in parallel with the place where energy is being converted. Voltage is the electrical force, or "pressure", that causes current to flow in a circuit. It is measured in VOLTS ( ...
Subjects: Science Essays > Physics
Pysics invstigation as to what factors afect resistance in a circuit.
To investigate how the electrical resistance of a wire changes in relationship to its length.Physics Investigation Of Resis ... is should therefore look something like this:Reason: with electricity, the property that transforms electrical energy into heat energy, in opposing electrical current, is resistance. A property of the ... l all of the free electrons arrange themselves in lines moving in the same direction. This forms an electrical current. Resistance is encountered when the charged particles that make up the current co ...
Subjects: Science Essays > Physics
Investigating how the length of wire affects the resistance
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 0.1 ... the length of the wire because that is what I will be changing. The dependant variable will be the resistance because it will change only due to the length of wire.The circuit should be set up as in ...
Subjects: Science Essays > Physics
Plan for Science Course Work The Resistance of Lengths of Wire
a correlation between the length of the wire and it's resistance.Research:Ohm is the common unit of electrical resistance, equivalent to one volt per ampere and represented by the capital Greek letter ... not get too hot and to lessen the possibility of damage from an electric shock.I will not touch any electrical equipment with wet hands and I understand what to do in the event of someone receiving an ...
Subjects: Science Essays > Physics
The change of resistance through various lengths of wire.
t correctly because my scientific theory has been proved correct.METHODThere may not have been good electrical contact between the crocodile clip and the wire and this may have caused the readings not ...
Subjects: Science Essays > Physics
Physics Investigating Resistance in a Wire
Investigating Resistance in a WireThe resistance is the name given to the tendency for a wire to oppose the moveme ... the tendency for a wire to oppose the movement of the electrons passing through it. The greater the resistance the electrons occur the more voltage is needed to propel the current through the wire. Re ... e is needed to propel the current through the wire. Resistance is defined by the following equation:Resistance R= p.d across the wire (V) Current through the wire (I) Key Facto ...
Subjects: Science Essays
Investigation into resistance of a wire (contains spaces for diagrams).
temperature of the wire is warmed either by the ambient temperature of the room, sunlight or by the electrical current passing through it. To keep the two former constant I will try to perform my expe ... and therefore the temperature of the wire as a result of the resistance. The second way of reducing electrically induced heat by switching off the experiments electricity supply to allow cooling down ...
Subjects: Science Essays
Physics coursework - Resistance of a wire
GCSE Physics Coursework - Resistance of a WireAim: To investigate how the resistance of a wire is affected by the length of th ... lectrons depends on the material and more free electrons means a better conductor, i.e. it has less resistance. For example, gold has more free electrons than iron and, as a result, it is a better con ... uring free electrons. This happens across the length of the wire and thus electricity is conducted. Resistance is the result of energy loss as heat. It involves collisions between the free electrons a ...
Subjects: Science Essays > Physics
Hows does changing the length of wire affect resistance?
OBJECTIVEFor this piece of coursework I have been asked to investigate into the resistance of wires when the length is changed.INTRODUCTIONThe objective for my coursework (as alrea ... ursework (as already stated above) is to investigate how changing the length of wire can affect the resistance.There are factors which can affect how accurate our expriment is come on four levels.As i ... e pipe the longer the water takes to reach its destination. This can be applied in the variables of resistance. The electrons 'bounce' off the atoms - this causes the electrons to head elsewhere rathe ...
Subjects: Science Essays > Physics
The Resistance Of A Wire
TaskTo investigate how the resistance of a wire is affected by the length of the wire.TheoryWhat is resistance?Resistance is a ... ither very thin or very long.e.g. The filament across an electric light bulb.How is it measured?The resistance of a length of wire is calculated by measuring the current present in the circuit (in ser ... ltage across the wire (in parallel). These measurements are then applied to this formula:Gradient = resistanceV = I x RThe other ways of writing Ohm's Law are:R = V/I or I = V/ROhm's LawIt is also rel ...
Subjects: Science Essays > Physics
How the Length of a Wire Affects its Resistance
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 i ... leted a preliminary experiment in which I investigated the effect of the thickness of a wire on its resistance, using three constantan wires and one copper wire. I found that the resistance increased ... se I would not really be able to compare the results. I therefore decided to use a wire of a higher resistance; constantan, because it will allow me to get more reliable and comparable results.Prelimi ...
Subjects: Science Essays > Physics
Physics Coursework Theory - The resistance of a wire.
a wire. Another factor is the conductivity of the material we are using. Some metals are just more electrically conductive than others. As long as I use the same type of metal for each wire, my exper ...
Subjects: Science Essays > Physics
Resistance Investigation
Aim: The aim of the investigation is to find out whether or not the length of the wire affects the resistance.Prediction: I predict that as the wire increases in length the resistance will increase, ... es causing a decrease in velocity for the moving particle). I think this will happen because as the resistance increases the ions are closer together causing more collisions slowing down the velocity ...
Subjects: Science Essays > Physics
Notes on series and parallel circuts in Electricity
n to source - only one path in series circuit - can measure current anywhere in circuitLaw #4 - the resistance (total) increases in a series circuit as the number of loads increases - the total resist ... uit as the number of loads increases - the total resistance of a circuit is equal to the sum of the resistances of each wire and loadRT = R1 + R2 + R3 + ...******************************************** ...
Subjects: Science Essays > Physics
GCSE, Physics: What affects the resistance of a piece of wire?
Metals are good conductors of electrical current as they contain free electrons that are free to move about or flow and therefore ... carry and transfer energy as a current, Current is the measure, in amperes, of the rate of flow of electrical charge through a circuit. All circuits / components have resistance making it difficult f ... use of their increased energy. This causes more collisions, and collisions slow the rate of flow of electrical charge through the circuit, and so cause more resistance.- Material; the type of material ...
Subjects: Science Essays > Physics
Physics Coursework Electrical Resistance of A Wire
Definition of resistance: A materials opposition to the flow of electric current.Formula for resistance: Voltage ( ... ge (V) / Current (A) = resistance (Ω)For my Physics course work I am going to investigate how resistance changes when different factors change. I will now describe the four factors which affect ... tance, and out of these four factors I will choose one that I will investigate.Factors which affect resistance:- The length of a wire.- The thickness of a wire.- The material that the wire is made fro ...
Subjects: Science Essays > Physics
Physics (Resistance Of A Wire) Plan
What affects the resistance of a wire Planning for the SC1 Introduction: In this experiment I will be investigating h ... he voltage to get different results.Aim: The aim of this experiment is to find out what affects the resistance of a wire. In this experiment I will be investigating whether or not length affects the r ... ch factor/s should be changed to get best results. I think that the higher the voltage the more the resistance will change when length of the wire is changed. This means that the two variables will be ...
Subjects: Businesss Research Papers
Planning & Designing Experiment: Investigating the current - potential difference relationship (IV Characteristics) for a metal wire.
ning Theory: Resistance is a property of any object or substance to resist or oppose the flow of an electrical current. The quantity of resistance in an electric circuit determines the amount of curre ... nit of resistance is the Ohm which has the Greek letter 'Omega (Ω)'. By default, that is, for electrical calculations, the inverse of Resistance is obtained and this is known as conductance. If ...
Subjects: Science Essays > Physics