# Diodes

In this lesson we will be learning about diodes. We will also be exploring the idea of conventional current.

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!

## Question 6

Q1.Which of these components is designed to break the circuit, if the current becomes too high?

1/6

Q2.When measuring the resistance of a lamp, which component (which is placed in series) varies the current in the circuit?

2/6

Q3.What happens to the brightness of the lamp as the potential difference is increased?

3/6

Q4.On a normal I-V graph what does a steep line represent?

4/6

Q5.Why does the resistance increase as the potential difference increases for a lamp?

5/6

Q6.If a current of 1.2 A passes through a lamp, and it has a potential difference of 18 V across it. What is the resistance of the lamp?

6/6

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!

## Question 6

Q1.Which of these components is designed to break the circuit, if the current becomes too high?

1/6

Q2.When measuring the resistance of a lamp, which component (which is placed in series) varies the current in the circuit?

2/6

Q3.What happens to the brightness of the lamp as the potential difference is increased?

3/6

Q4.On a normal I-V graph what does a steep line represent?

4/6

Q5.Why does the resistance increase as the potential difference increases for a lamp?

5/6

Q6.If a current of 1.2 A passes through a lamp, and it has a potential difference of 18 V across it. What is the resistance of the lamp?

6/6

# 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:

# Diodes

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

## Question 6

Q1.Two identical resistors (10 ꭥ) are connected in series. What will be their total resistance?

1/6

Q2.A cell in a parallel circuit has a potential difference of 12 V. What will be the potential difference across each branch?

2/6

Q3.What does this electrical symbol represent?

3/6

Q4.What does LED stand for?

4/6

Q5.In which direction is conventional current said to flow?

5/6

Q6.What is the threshold voltage?

6/6

Quiz:

# Diodes

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

## Question 6

Q1.Two identical resistors (10 ꭥ) are connected in series. What will be their total resistance?

1/6

Q2.A cell in a parallel circuit has a potential difference of 12 V. What will be the potential difference across each branch?

2/6

Q3.What does this electrical symbol represent?

3/6

Q4.What does LED stand for?

4/6

Q5.In which direction is conventional current said to flow?

5/6

Q6.What is the threshold voltage?

6/6

# Lesson summary: Diodes

## Time to move!

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

For 5 mins...

Move around:
Walk

On the spot:
Dance