Experiment on the Characteristics of a Resistor and Ohm's Law

Experiment on the Characteristics of a Resistor and Ohm's Law

Assessment

Interactive Video

Physics, Science, Engineering

10th Grade - University

Hard

Created by

Quizizz Content

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The video tutorial demonstrates an experiment to investigate the relationship between current and potential difference across a fixed resistor. Matt constructs a circuit, measures current and voltage, and records the data. He then reverses the current direction to observe changes. The results are plotted on a graph, showing a linear relationship, indicating that current is directly proportional to potential difference. The experiment concludes with the calculation of resistance, reinforcing the concept of Ohm's Law.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step Matt takes in setting up the circuit?

Adjust the power supply voltage

Connect the voltmeter in parallel

Connect the ammeter in series

Connect the resistor to the power supply

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why does Matt check the circuit before adding the voltmeter?

To adjust the resistor value

To verify the circuit is complete

To ensure the voltmeter is working

To measure the initial voltage

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does Matt record the potential difference and current values?

By recording them in a table

By entering them into a computer

By writing them on a paper

By using a digital display

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What change does Matt make to reverse the current direction?

Changes the ammeter settings

Switches the resistor connections

Reverses the power supply connections

Adjusts the voltmeter position

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of plotting the graph in the experiment?

To determine the resistance

To find the maximum current

To check the accuracy of the voltmeter

To visualize the relationship between voltage and current

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does Matt ensure accuracy when plotting points on the graph?

By using a calculator

By estimating the positions

By plotting on grid lines or halfway between them

By using a ruler

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the graph being a straight line through the origin?

It means the experiment was unsuccessful

It suggests a variable resistance

It shows the resistor is faulty

It indicates a constant resistance

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