# Case Study: Nikola Tesla

In this lesson we learn about the engineering genius of Nikola Tesla and how Tesla's alternating current system won out over Edison's direct current system.

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!

Q1.Which statement below is incorrect?

1/9

Q2.A transformer has 8000 turns on the secondary coil. The secondary voltage is 32,000 V and the primary voltage is 415 V. What is the number of turns on the primary coil? (to 3 significant figures)

2/9

Q3.A transformer has 500 turns on the primary coil and 250 turns on the secondary coil. If the primary voltage is 230 V, what will the secondary voltage be?

3/9

Q4.A transformer has a primary voltage of 12 V and a primary current of 2 A. If the secondary voltage is 24 V, what will the secondary current be?

4/9

Q5.A transformer with 1000 turns on the primary coil and 3000 turns on the secondary coil needs to produce an output current of 4.8 A. What will the input current be?

5/9

Q6.True or false? Step-up transformers decrease the potential difference.

6/9

Q7.True or false? Step-up transformers decrease the current.

7/9

Q8.True or false? Lower current means less power loss due to resistance.

8/9

Q9.True or false? Lower current means less energy is transferred.

9/9

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!

Q1.Which statement below is incorrect?

1/9

Q2.A transformer has 8000 turns on the secondary coil. The secondary voltage is 32,000 V and the primary voltage is 415 V. What is the number of turns on the primary coil? (to 3 significant figures)

2/9

Q3.A transformer has 500 turns on the primary coil and 250 turns on the secondary coil. If the primary voltage is 230 V, what will the secondary voltage be?

3/9

Q4.A transformer has a primary voltage of 12 V and a primary current of 2 A. If the secondary voltage is 24 V, what will the secondary current be?

4/9

Q5.A transformer with 1000 turns on the primary coil and 3000 turns on the secondary coil needs to produce an output current of 4.8 A. What will the input current be?

5/9

Q6.True or false? Step-up transformers decrease the potential difference.

6/9

Q7.True or false? Step-up transformers decrease the current.

7/9

Q8.True or false? Lower current means less power loss due to resistance.

8/9

Q9.True or false? Lower current means less energy is transferred.

9/9

# 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:

# Case Study : Nikola Tesla

This quiz will help you to consolidate your learning about Nikola Tesla and the AC DC debate.

Q1.Which of the following statements are true?

1/4

Q2.What was Nikola Tesla really good at?

2/4

Q3.Which statement is a disadvantage of alternating current electricity?

3/4

Q4.Why does direct current not work with transformers?

4/4

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:

# Case Study : Nikola Tesla

This quiz will help you to consolidate your learning about Nikola Tesla and the AC DC debate.

Q1.Which of the following statements are true?

1/4

Q2.What was Nikola Tesla really good at?

2/4

Q3.Which statement is a disadvantage of alternating current electricity?

3/4

Q4.Why does direct current not work with transformers?

4/4

# Lesson summary: Case Study: Nikola Tesla

## It looks like you have not completed one of the quizzes.

To share your results with your teacher please complete one of the quizzes.

## 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:
Dance