• 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...


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.


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.


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)

    As shown above, the experimental error is 1.61%. This means that the difference between the experimental and theoretical value has a difference of 1.61%. This experimental error is less than the uncertainty. This also shows that the theoretical value lies within the uncertainty of the experimental result. Therefore, the experiment supports the relationship between the diameter, length and

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

    from the Rigid Supports � 0.05 (in cm) T1 (in Newton) Vertical Distance (y1) from the Rigid supports � 0.05 (in cm) T1 (in Newton) 9 18 0.7097 � 0.007 23 0.6816 � 0.007 18 24.3 0.7348 � 0.008 28.7 0.6970 � 0.007 27 28.8 0.7486 � 0.008 33.5 0.7015

  1. Current Balance Lab - investigate how a magnetic field affects a wire carrying an ...

    The graphs very nearly do go through the origin. Therefore to calculate the slope we need to find F over IS. The slope for when IB = 4A is 4.55 � 10-4. The slope for when IB = 2A is 2.33 � 10-4. What this shows is a clear positive relationship between the force and the current running through the wire.

  2. Physics Wave revision question

    The separation of the two pulses is referred to as the S-P interval. (d) (i) On the trace produced by laboratory L2, identify, by reference to your answers in (c), the pulse due to the P wave (label the pulse P).

  1. HL Physics Revision Notes

    a coolant passing through the moderator extracts the energy to turn water into steam which turns a turbine and produces electricity. Moderator ? Slows down neutrons with atoms, it surround the fuel rods which are the tubes containing Uranium-235. Heat exchanger ? allows nuclear reaction to occur in a place

  2. Investigating optical properties of Jelly.

    Making sure no parallax error was caused, the fourth pin was put down on the opposite side of the Jelly making sure that it too lined up perfectly with the three pins on the other side. The same was repeated with the fifth and the sixth pin.

  1. Determining the diameter of a piece of Nichrome wire by determining its resistivity

    and maximum slopes is due to the increasing uncertainty in the measurement of the length. The uncertainty, however small, cannot be ignored and they must be explored so that if possible, they can be avoided in the future. Firstly, the recording of the length of the Nichrome wire was no

  2. IB Physics Design Lab - Does the temperature a bar magnet is exposed to ...

    ?micro-shocks? at the surface of the metals eventually causing the magnet to lose its strength. To maintain the same pH for all water baths, I will be using distilled water which has a neutral pH (pH 7). Vibrations/Shocks Small vibrations or shock to the magnet may also lead to the

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