Strength of the electromagnet

Strength of the electromagnetAim To investigate how different factors affect the power of the electromagnet.Introductionthither are totally two factors that I am going to investigate in this experimentm F1 How the flake of coils affects the strength of the electromagnet.m F2 How a change in topical affects the strength of an electromagnet. dead reckoningm F1 I think as the number of coils increase the strength of the electromagnet would in like manner increase.m F2 I think as the current increases the strength of the electromagnet would as well as increase.Variablesm F1* Independent Number of coils.* certified keep at which compass needle deflects.(+/-0.05 cm) Constants Current, diameter of the wire, temperature, corresponding iron core.m F2* Independent Current (+/-0.01amps) Dependent Distance at which compass needle deflects.(+/-0.05 cm) Constants Number of coils, diameter of the wire, temperature, same iron core.Apparatus* Power Supply* Ammeter (0.01amps)* Electromagnets w ith different number of coils* Plastic formula (0.05cm)* Plotting Compass* Crocodile clip wires* RheostatProcedure Using crocodile clips connect the circuit in the following way F1 Take an iron nail and with the help of a nichrome wire, coil it around the nail 5 clock. Switch the circuit on and wait for a minute. Note down the constant current. Take the plotting compass and steadily place it close to the electromagnet and slide it away in a bully line till the needle deflects slightly to one side from its vertically straight position. Place a ruler from the north pole of the electromagnet and tick off the distance where this deflection occurs. This where the magnetic field lines would approximately end, and hence more(prenominal) the distance more the field lines and greater the strength. Repeat the steps above plainly with 10, 15, 20, 25, 30 and 35 coils. For the same number of coils measure the distance of deflection 2 times for a second trial. F2 Using the same circuit now adjust the variable resistor so that u get down a current of 0.5amps silky through the circuit. Make the constant number of coils to be 10 coils. Take the plotting compass and steadily place it close to the electromagnet and slide it away in a straight line till the needle deflects slightly to one side from its vertically straight position. Place a ruler from the north pole of the electromagnet and note the distance where this deflection occurs. This where the magnetic field lines would approximately end, and hence more the distance more the field lines and greater the strength. Repeat the steps above but with 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0 and 5.5 amps. For the same current record the distance two times for a second trial.Raw Data TableF1 Effect of the number of coils on the strength of the electromagnet.Number of Coils of electromagnetDistance of deflection from North Pole of the magnet(+/-0.01cm) test 1Trial 251.71.9104.95.1157.67.5209.59.52512.312.13014.8153516.9 17.2Constant Current0.75 AF2 How changing current affects the distance at which the needle deflects.Current (+/-0.01A)Distance from North Pole of the magnet(+/-0.05cm)Trial 1Trial 20.51.31.21.02.93.01.54.64.62.06.26.32.57.98.03.09.39.53.510.710.84.011.611.84.512.112.35.012.612.95.512.812.8Constant No. of Coils10Processed Data TableThe only processing that erect be done in this experiment is to find the average distance for the investigations for both the trials and hence making it easier to make the represent.F1 Effect of the number of coils on the strength of the electromagnet. Number of Coils of electromagnetAverage Distance of deflection from North Pole of the magnet(+/-0.05cm)51.8105157.55209.52512.23014.93517.05Constant Current0.75 AF2 How changing current affects the distance at which the needle deflects.Current (+/-0.01A)Average Distance from North Pole of the magnet(+/-0.05cm)0.51.251.02.951.54.602.06.252.57.953.09.403.510.754.011.704.512.205.012.755.512.80Constant number of coils10Now I will plot the graphs of both these averages.Graph Analysis (Graph at the End)F1 As you can see the graph is proportionate. As the number of coils increases the strength of the electromagnet also increases. There is a positive co-relation and this can be proved by theory as well. As the number of coils increase, the magnetic field of each coil also increases and hence a larger magnetic field would cause the electromagnet to be stronger. There is only one anomaly in our results at 20 coils and this can be neglected as it is a very minor anomaly.F2 In this graph also we notice that there is a positive co-relationship and hence the current is proportionate to the strength of the magnet. As current in a circuit increases the strength of the magnet would also increase as the coil is provided with more bear down on and hence the field lines would be spread over a larger area and the strength would be larger. But in this graph later on 4.0 amps the graph is no longer prop ortionate. This can be due to the large amount of heat generated in the wires causing more resistance and the value of current would have changed and hence the curve in the graph.ConclusionOur hypothesis for both the factors was proven right by our graphs. Strength of an electromagnet is proportionate to the current and the number of coils in the solenoid. As the number of coils increase the area of the magnetic field lines also increases hence a stronger electromagnet is produced. It is the same for an increase in current. But after a sealed current it becomes tough to maintain other constant factors like temperature which might cause inaccurate results.Evaluation We could have taken more trials to get breach results. We could have used an insulated wire so that the wire wont heat up so fast and it wouldnt have changed our results. The current wasnt always exact. It kept move hence it may have given inaccurate readings. The exact distance where the needle turned would be very to ugh to find out as it turns over a range of distance hence that may have given inaccurate results.Fair Test* The distance between the coils was kept the same in all the trials.* For the first experiment we kept the current constant so that we can fairly compare the results.* For the second experiment we kept the number of coils the same so that we can fairly compare the results.* And for both the experiments we kept the same material of the core and the wire.Safe Test As it was dealing with electrical energy we made sure we did not touch any open ends to prevent ourselves from getting a shock. Also we did not touch the wire right after the experiment was over as it may have been quite hot.