Electrical resistance

In this lesson we will explore the concept of electrical resistance. We will also learn about factors that will affect the current in a series circuit and we will learn how to use the equation V=IR.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

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!

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Q6.A 3 V cell is used to transfer 15 mJ of energy to a resistor. How much charge must flow through the resistor?

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

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!

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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.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Resistance

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

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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.

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This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Resistance

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

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Lesson summary: Electrical resistance

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