# Measuring resistance

This lesson focuses on identifying variables in the measuring resistance practical and how we can appropriately display our results. We will then describe and explain the effect of a length of wire on resistance

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Select the correct unit for resistance

1/7

Q2.Select the correct circuit symbol for a resistor

2/7

Q3.Select the correct equation for ohm's law (where 'x' represents multiply and '/' represents divide)

3/7

Q4.Convert 3 mA to A

4/7

Q5.Convert 2.4 kΩ into Ω

5/7

Q6.A bulb has a current of 2 A and a resistance of 6 Ω. What is the potential difference? Remember potential difference = current x resistance

6/7

Q7.A computer has a current of 0.75 A and a potential difference of 3.3 V. What is the resistance? Give your answer to 2 significant figures

7/7

Quiz:

# Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.Select the correct unit for resistance

1/7

Q2.Select the correct circuit symbol for a resistor

2/7

Q3.Select the correct equation for ohm's law (where 'x' represents multiply and '/' represents divide)

3/7

Q4.Convert 3 mA to A

4/7

Q5.Convert 2.4 kΩ into Ω

5/7

Q6.A bulb has a current of 2 A and a resistance of 6 Ω. What is the potential difference? Remember potential difference = current x resistance

6/7

Q7.A computer has a current of 0.75 A and a potential difference of 3.3 V. What is the resistance? Give your answer to 2 significant figures

7/7

# Video

Click on the play button to start the video. If your teacher asks you to pause the video and look at the worksheet you should:

• Click "Close Video"
• Click "Next" to view the activity

Your video will re-appear on the next page, and will stay paused in the right place.

# Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

Quiz:

# Measuring Resistance

This will assess your understanding of the knowledge gained in this lesson so far and your prior knowledge.

Q1.Select the correct equation for ohm's law (where 'x' represents multiply and '/' represents divide).

1/6

Q2.A bulb has a current of 3.2 A and a resistance of 4 Ω. What is the potential difference? Give your answer to 2 significant figures

2/6

Q3.Select the factors that INCREASE resistance in a wire (Tick 3 boxes)

Select three (3) boxes

3/6

Q4.A student wants to measure how temperature affects resistance of a wire. Identify the independent variable.

4/6

Q5.A student wants to measure how temperature affects resistance of a wire. Identify the dependent variable.

5/6

Q6.A student wants to measure how temperature affects resistance of a wire. Identify the control variable.

6/6

Quiz:

# Measuring Resistance

This will assess your understanding of the knowledge gained in this lesson so far and your prior knowledge.

Q1.Select the correct equation for ohm's law (where 'x' represents multiply and '/' represents divide).

1/6

Q2.A bulb has a current of 3.2 A and a resistance of 4 Ω. What is the potential difference? Give your answer to 2 significant figures

2/6

Q3.Select the factors that INCREASE resistance in a wire (Tick 3 boxes)

Select three (3) boxes

3/6

Q4.A student wants to measure how temperature affects resistance of a wire. Identify the independent variable.

4/6

Q5.A student wants to measure how temperature affects resistance of a wire. Identify the dependent variable.

5/6

Q6.A student wants to measure how temperature affects resistance of a wire. Identify the control variable.

6/6

# Lesson summary: Measuring resistance

## Time to move!

Did you know that exercise helps your concentration and ability to learn?

For 5 mins...

Move around:
Climb stairs

On the spot:
Chair yoga