# Filament lamps

In this lesson we will be learning about the relationship between current, potential difference and resistance in a filament lamp. We will also be looking at its I-V graph.

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 5

Q1.Revision: 10 C of charge flow through a resistor in 4 seconds. What is the current?

1/5

Q2.6 A flows through a resistor and it is measured to have a potential difference of 1.2 V across it. What is its resistance?

2/5

Q3.How do we measure negative values of current and potential difference

3/5

Q4.On an I-V graph what does the straight line represent?

4/5

Q5.What is an ohmic component?

5/5

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 5

Q1.Revision: 10 C of charge flow through a resistor in 4 seconds. What is the current?

1/5

Q2.6 A flows through a resistor and it is measured to have a potential difference of 1.2 V across it. What is its resistance?

2/5

Q3.How do we measure negative values of current and potential difference

3/5

Q4.On an I-V graph what does the straight line represent?

4/5

Q5.What is an ohmic component?

5/5

# 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:

# Filament Lamps

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

## Question 6

Q1.Revision: 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:

# Filament Lamps

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

## Question 6

Q1.Revision: 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

# Lesson summary: Filament lamps

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