Question: Somebody, please help me with this assignment, I am in dire need of your assistance. Don't ignore my question please. I will really appreciate your
Somebody, please help me with this assignment, I am in dire need of your assistance. Don't ignore my question please. I will really appreciate your assistance. I have done have already done some parts of it, please check this and assist me with the rest of the assignment. It is supposed to be a lab report, and the experiment is supposed to be done in the PhET virtual lab. If you click on that link, it will open a virtual lab when you'll find everything you need: https://phet.colorado.edu/sims/html/circuit-construction-kit-dc/latest/circuit-construction-kit-dc_en.html
Instructions: The flow of electricity and its associated properties is studied throughout physics. In this lab activity, you will use the simulation above to design and build computer-simulated mixed direct current (DC) circuits.
- Determine the testable question you wish to investigate. If you have trouble thinking of a testable question, review the simulation for ideas. Ensure that your testable question can be answered using quantifiable data and not simply qualitative observations.
- Once you have decided your testable question, propose a reasonable hypothesis for the experiment you plan to conduct. Your hypothesis should explain how the change in your independent variable will affect your dependent variable. As previously stated, the change in your dependent variable should be quantifiable.
- Develop the procedure for the experiment you intend to conduct to test your hypothesis. Your procedure should be very specific and detailed, allowing another scientist to recreate your experiment using the exact steps you used in your investigation.
- Conduct your experiment to test your hypothesis.
- Once you have completed your test(s), communicate your results in a lab report. Your lab report should include the following sections: testable question, hypothesis, materials, procedure (including your identified variables), observations, results, discussion, and conclusion. All the necessary information is provided including an exemplar.
Testable question: How does changing the resistance in a direct current (DC) circuit affect the potential difference (voltage) across the circuit?
Hypothesis: I hypothesize that as the resistance in the direct current (DC) circuit increases, the potential difference (voltage) across the circuit will also increase. This hypothesis is based on Ohm's Law, which states that the potential difference (V) across a conductor is directly proportional to the current (I) passing through it, given a constant resistance (R) (V = I * R). This means that if we keep the current flowing through the circuit constant, an increase in resistance should lead to a proportional rise in potential difference. This occurs because a higher resistance restricts the flow of electrons, causing them to encounter more resistance, which in turn leads to an increase in the voltage needed to maintain the same current. I expect to observe a positive linear relationship between resistance and potential difference. This correlation will be crucial in understanding the fundamental behavior of electrical circuits and can have significant implications in various applications of electrical engineering and circuit design.
Materials:
Computer with internet access
PhET virtual lab: https://phet.colorado.edu/sims/html/circuit-construction-kit-dc/latest/circuit-construction-kit-dc_en.html
Procedure: i. Open the simulation and set up a simple circuit with a DC power supply, an ammeter, a voltmeter, and a resistor.
ii. Set the DC power supply to a specific current value and note this down.
iii. Connect the ammeter in series with the circuit to measure the current flowing through the circuit. Ensure that the current remains constant throughout the experiment.
iv. Connect the voltmeter in parallel with the resistor to measure the potential difference across the resistor.
v. Start with a resistor of known resistance. Record the resistance and the corresponding potential difference as indicated by the voltmeter.
vi. Replace the resistor with another of a different resistance. Again, record the resistance and the corresponding potential difference.
vii. Repeat this process for resistors of various resistances, each time recording the resistance and the corresponding potential difference.
viii. Ensure that the current remains constant throughout the experiment.
An exemplar on how to assist me with rest of the rest of the assignment:
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