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?

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


Question 2. The primary coil has 9000 turns and a potential difference of 15V. The secondary coil has 3000 turns. What is the potential difference in the secondary coil?

45V.
30V.
10V.
5V.


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

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


Question 4. How does a transformer produce a current in a secondary coil?

It's induced by the field produced by the primary coil.
The core conducts the current to the secondary coil.
The primary coil is electrically connected to the secondary coil.
It's induced by the field produced by the secondary coil.


Question 5. How can we induce a current in a conductor?

Move the conductor relative to a magnetic field.
Line a conductor up with magnetic field lines.
Wrap the conductor around a magnet.
Put the conductor next to a magnet.


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