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Physics Worksheet: Investigating Resistance and Circuits, Assignments of Earth science

Earth science

This worksheet presents a series of exercises designed to enhance understanding of electrical circuits, specifically focusing on resistance and its behavior in different configurations. Students are challenged to design experiments, analyze data, and solve problems related to potential difference, current, and power dissipation in circuits involving resistors and lamps. the exercises promote critical thinking and problem-solving skills in the context of practical physics.

Typology: Assignments

2023/2024

Uploaded on 05/06/2025

vaishnavi-matta
vaishnavi-matta 🇬🇧

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Worksheet 2.07: Questions
Physics: Earthing & Resistance of a wire practical
Q1.
* Explain, with the aid of a circuit diagram, the method a student could use to investigate how the
resistance of a single lamp changes with the potential difference across the lamp.
(6)
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(Total for question = 6 marks)
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Worksheet 2. 07 : Questions

Physics: Earthing & Resistance of a wire practical

Q1.

  • Explain, with the aid of a circuit diagram, the method a student could use to investigate how the resistance of a single lamp changes with the potential difference across the lamp. (6) ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. .............................................................................................................................................

Q2.

A student investigates resistors connected in parallel using a number of resistors. Each resistor has the same resistance. Figure 19 shows a circuit diagram with one resistor, R. (i) Add to Figure 19:

  • a voltmeter to find the potential difference across resistor R
    • another resistor in parallel with resistor R. (2) (ii) State the measurements that the student must take to find the overall resistance of the resistors in parallel. (2) ............................................................................................................................................. ............................................................................................................................................. ............................................................................................................................................. .............................................................................................................................................

Q3.

A circuit is then set up with two resistors as shown in Figure 21. (i) Calculate the potential difference across the 15 Ω resistor. (2) potential difference = ........................................................... V (ii) Calculate the total power dissipated when there is a current of 0.20 A in the two resistors. Use the equation P = I^2 × R (2) power produced ........................................................... W

Q4.

Draw a circuit diagram you could use to investigate the relationship between potential difference, current and resistance for a filament lamp. (3)