• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

How does a variation of current through the windings of insulated wire affect the strength in the electromagnet?

Extracts from this document...

Introduction

Planning A Research Question: How does a variation of current through the windings of insulated wire affect the strength in the electromagnet? Key Variables: Variable: Current (depends on the input voltage of the power kit) Constants: Length of the winding wire, Number of turns, Permeability (depends on the insulation around the wire and the physical properties (composition, diameter, length) of the nail) Hypothesis: If we double the current, then the strength in the electromagnet should also double. According to the magnetic field strength equation, , the flux density B inside the solenoid is directly proportional to the current I. Hence, we predict that the electromagnet strength will increase at the same rate as we increase the current. ...read more.

Middle

a) Alter the input voltage and measure the changes voltmeter, ammeter and spring balance to measure the resultant electromagnetic force expressed in Newton b) Repeat the experiment 12 different voltages to obtain sufficient data. Try increments of 1V from the power supply to 12V c) Record three trials for each voltage (current) 4. If any significant random error occurs during the measurement, that value is to be ignored and the experiment to be repeated. Data Collection Voltage (V, �0.01V) Current (A, �0.01A) Force (N, �0.025N) Trial 1 Trial 2 Trial 3 Average 0.52 0.55 0.125 0.150 0.150 0.142 1.16 1.18 0.150 0.175 0.150 0.158 1.82 1.88 0.175 0.200 0.175 0.183 2.50 2.60 0.200 0.200 0.225 0.208 3.16 3.35 0.225 0.225 0.225 0.225 4.00 4.22 ...read more.

Conclusion

But the results were consistent throughout the whole experiment and very few measurements had to be repeated. Overall I am satisfied with the experiment as my hypothesis was validated: the magnetic field strength of the solenoid is directly proportional to the current in the circuit, provided that all other parameters are unchanged. The apparatus used for this experiment was satisfactory. The only device that we believe could be improved is the spring balance. A model with a finer scale could provide more accurate data. In our opinion, this could be the only improvement that we can suggest to the procedure. The data we collected was quite precise and easy to interpret. ?? ?? ?? ?? IB Physics SL Lab Report - Electromagnets 1 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Physics section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related International Baccalaureate Physics essays

  1. Marked by a teacher

    Experiment to calculate the diameter of a piece of nichrome wire from its electrical ...

    3 star(s)

    + (37.2 �0.1cm) = 111.9 �0.3cm Sample calculation 2. Converting length from cm to m: Example using the trial from the length of 37.3cm: Sample calculation 3.

  2. Suspension Bridges. this extended essay is an investigation to study the variation in tension ...

    � 0.001 21.2 0.3559 � 0.001 129.4 17.8 0.3105 � 0.001 19.5 0.2840 � 0.001 String Type 2: - Elastic Band (Relatively Elastic) Horizontal Distance (x) from the Rigid Support 1 � 0.05 (in cm) Length of the string = 140 cm Length of the string = 144 cm Vertical Distance (y1)

  1. Finding the Spring Constant

    Weakness: Another weakness could have been that the masses we were using contained quite a lot of impurities which had mass that was added to the masses we were working with. This could have increased inaccuracy within our results. To improve this, we should simply just measure each weight every time.

  2. Investigate the Strength of Straw.

    Tough or toughness means undergoes considerable plastic deformation before it breaks. Consequently, tough materials absorb a great deal of energy before they break. In the experiment, when choosing a material it is always important to consider how the material behave under the conditions in which it will be used.

  1. Thermal Properties of Liquids

    From the table above you can see that pepsi, waster and milk all have similar densities indicating that maybe their heating rates will be similar to another if all other variables remained controlled (ceteris paribus). From this I chose water as my control for all the other substances/liquids as it

  2. Factors affecting an electromagnet

    Out of there 4 factors, students are advised to choose a maximum of 2 factors to compare and analyze. When comparing two factors, it is important to keep in mind that while investigated one, the other one must stay constant.

  1. How does the sinkage depth of a tyre affect its rolling resistance ?

    The air pressure of the tire causes the tread material in the tire to expand as it is partially filled and when the tread material is on the sand it adjusts the frame and the tread in a suitable manner .

  2. HL Physics Revision Notes

    at which displacement is at maximum The fundamental frequency is the first harmonic. P93 V=f? 11.2: Doppler Effect: The Doppler effect us the change of frequency of a wave as a result of the movement of the source or the movement of the observer.

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work