# Resistance of a wire

In this lesson we will explore how to measure the current of a component. We will also study Required Practical 3, measuring the resistance of a wire.

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.Which of these is the symbol for the unit of measure of resistance?

1/7

Q2.Which of these is the correct equation linking potential difference, current and resistance?

2/7

Q3.Which of these is the definition for resistance?

3/7

Q4.What is the symbol for the unit of measure of charge?

4/7

Q5.If the resistance of a series circuit is increased and the cell voltage remains the same, what will happen to the current?

5/7

Q6.A lamp has a resistance of 12 Ω, if the current through the lamp is 2 A, what is the potential difference across the lamp?

6/7

Q7.The national grid has a potential difference of 0.4 MV applied across the transmission lines. If the resistance of the lines is 0.2 kΩ, calculate the current running through the national grid.

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.Which of these is the symbol for the unit of measure of resistance?

1/7

Q2.Which of these is the correct equation linking potential difference, current and resistance?

2/7

Q3.Which of these is the definition for resistance?

3/7

Q4.What is the symbol for the unit of measure of charge?

4/7

Q5.If the resistance of a series circuit is increased and the cell voltage remains the same, what will happen to the current?

5/7

Q6.A lamp has a resistance of 12 Ω, if the current through the lamp is 2 A, what is the potential difference across the lamp?

6/7

Q7.The national grid has a potential difference of 0.4 MV applied across the transmission lines. If the resistance of the lines is 0.2 kΩ, calculate the current running through the national grid.

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:

# Resistance of a wire

This quiz will test your knowledge from this lesson and your prior learning.

Q1.What is the unit of measure of resistance?

1/6

Q2.When measuring the resistance of a component, which two components are essential?

2/6

Q3.What is this a symbol for?

3/6

Q4.Which equation is the correct equation linking current, charge and time.

4/6

Q5.When measuring the resistance of a wire, what is the main hazard?

5/6

Q6.Which of these will increase the resistance of a wire?

6/6

Quiz:

# Resistance of a wire

This quiz will test your knowledge from this lesson and your prior learning.

Q1.What is the unit of measure of resistance?

1/6

Q2.When measuring the resistance of a component, which two components are essential?

2/6

Q3.What is this a symbol for?

3/6

Q4.Which equation is the correct equation linking current, charge and time.

4/6

Q5.When measuring the resistance of a wire, what is the main hazard?

5/6

Q6.Which of these will increase the resistance of a wire?

6/6

# Lesson summary: Resistance of a wire

## Time to move!

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

For 5 mins...

Move around:
Jog

On the spot:
Chair yoga