What is the principle behind the operation of a transformer?
Practice Questions
1 question
Q1
What is the principle behind the operation of a transformer?
Conservation of energy
Electromagnetic induction
Thermal expansion
Mechanical advantage
Transformers operate on the principle of electromagnetic induction, where a changing magnetic field induces an electromotive force (EMF) in a coil.
Questions & Step-by-step Solutions
1 item
Q
Q: What is the principle behind the operation of a transformer?
Solution: Transformers operate on the principle of electromagnetic induction, where a changing magnetic field induces an electromotive force (EMF) in a coil.
Steps: 7
Step 1: Understand that a transformer is a device used to change the voltage of electricity.
Step 2: Learn that transformers have two coils of wire: the primary coil and the secondary coil.
Step 3: Know that when electricity flows through the primary coil, it creates a magnetic field around it.
Step 4: Realize that if the current in the primary coil changes, the magnetic field also changes.
Step 5: Understand that this changing magnetic field passes through the secondary coil.
Step 6: Learn that the changing magnetic field in the secondary coil induces an electromotive force (EMF), which creates electricity in that coil.
Step 7: Know that the amount of voltage produced in the secondary coil depends on the number of turns of wire in each coil.
