Snapquiz - Transformers

This is the Snapquiz on Transformers. Click here or use the embedded video if you haven't watched the lesson yet.


Question 1. The primary coil has 1000 turns and a potential difference of 8V. The secondary coil has 4000 turns. What is the potential difference in the secondary coil?

64V.
32V.
16V.
2V.


Question 2. The primary coil has 9000 turns and a current of 2A. The secondary coil has 3000 turns. What is the current in the secondary coil?

0.67A.
4A.
6A.
0.33A.


Question 3. What is the benefit of using a core in a transformer?

It makes the transformer more powerful.
It makes the transformer heavier.
It makes the transformer more efficient.
It makes the transformer work.


Question 4. What is the benefit of using an AC supply?

The changing current gives us a stronger magnetic field.
It's safer than DC.
The changing current gives us a changing magnetic field.
It's more efficient than DC.


Question 5. The primary coil has 1000 turns and a current of 2A. The secondary coil has 4000 turns. What is the current in the secondary coil?

0.5A.
8A.
2A.
16A.


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