The operation of a transformer (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What is the primary purpose of a transformer?
What is the primary purpose of a transformer?
To change voltage of AC
What is the function of the iron core in a transformer?
What is the function of the iron core in a transformer?
Links magnetic field between coils
Which law explains the induction of emf in the secondary coil of a transformer?
Which law explains the induction of emf in the secondary coil of a transformer?
Faraday's Law
In the transformer equation, what is equal to?
In the transformer equation, what is equal to?
What characterises a step-up transformer?
What characterises a step-up transformer?
More turns on secondary than primary
What does a step-down transformer do?
What does a step-down transformer do?
Decreases voltage
How can eddy currents in a transformer be reduced?
How can eddy currents in a transformer be reduced?
Using a laminated iron core
Why is a soft iron core used in transformers?
Why is a soft iron core used in transformers?
Easily magnetised and demagnetised
Why are step-up transformers used in power transmission?
Why are step-up transformers used in power transmission?
To reduce current and minimise loss