How Does the Diameter of a While Affect the Resistance in a Circuit

3.) Starting with 20g of weight attached to the string on the motor (as seen above) perform 3 experiments with each weight group (20g, 40g, 60g, 80g) and record their voltage, time and current.

17. What is your guess as to the relationship between the current in the coil and the magnetic field?

Conductor – conductor is an object or type of material that allows the flow of electrical current in one or more directions. The electrons move easily to the other side, away from the object

T= 40ms, I figured this by guessing cause I could not find any information on how to calculate. So I used the equation for t and plugged in different numbers until I got the 10ms that was already given in the table. t= T x 0/360= 40ms x 90/360= 0.01 x 10^-3= 10ms

However, this was not the case. Discrepancies occurred between the two sets of values due to experimental errors. Some of the sources of error during the experiment include: drift on the voltmeter that affected the accuracy of measurements (instrumental error), rounding-off errors during calculations and the old resistance box. However, these errors can be eliminated by using a new functional resistance box, recording readings at right angles, and using four decimals in calculations to avoid rounding off errors.

3. Create various secondary coils using distinctive lengths, diameters, thickness of wire (gauge), and amount of windings/turns.

The experiment is repeated twice and an average is obtained. This ensures the consistency of the measurement as the reading is triplicated, thus reducing anomalies. It can be seen that the reading obtained were around the same value. This proves that the results are reliable.

The second wire has twice the length and twice the number of turns than the first wire.

9) As you sample the electric field further and further from a charged object, you find that the field strength weakens. Do you think the E field vs. distance relation is an inverse

There are 3 types of metals for electricity conducting: metallic conductor, semiconductor, and superconductor. Metallic conductors allow the free flow of ions and electrons through a sample; and its conductivity decreases as the temperature increases.

If the experiment were repeated, some parts of procedure should be modified or improved to shorten the time of experiment and make the experiment more organized. Such as the Part A, Step 5; after heated up the test tube in the boiling water, used cold water to cool down the temperature of the test tube instead of cool it down spontaneously. By modified that it would save more time. Since there were so many groups doing the same step together, the lab equipment was limit such as the centrifuge. Students lined up in front of the centrifuge to wait for the others. Students could spread out to the different part of the experiment, some groups could start with Part A and the other can start with Part C.

After obtaining the engineering requirements for the wire, six samples were sent to the lab to be tested.

Background Students had been taught ‘Electrochemistry’ as outlined in the IB Chemistry syllabus. Investigation Design an experiment that allows you to investigate a variable affecting the rate of electroplating. Your research question must be focussed and specific and must enable you to carry out your experiment safely and within the allocated time. Safety Show your research question to your teacher. Complete a safety hazard assessment before writing a full plan (a + b). Ensure your teacher approves this. Experiment If your plan is safe you will be allowed

Throughout this research paper, the reader will have a better understanding of the different forms of resistance. Also the reader will have the ability to compare the two types of resistance which were active and passive. And finally the reader will be abl

The outer shell of electrons that orbit the nucleus of an atom is called the valance shell. This is what makes a copper atom conduct. For a copper atom the number of electrons is one. When a charge of electricity is placed in the end of a wire the electrons move into the wire. Since there is only one electron in the valance shell of a copper atom it can be easily dislodged with a small amount of energy causing it to jump to the next atom. This will then cause the valance electron of that atom to jump to the next atom and so forth. This movement happens very fast making it possible for a large number of electrons to move through the wire. An example of a conductive atom is shown figure 1.