Cp11 Electromagnetic Introduction Flashcards
1
Q
What is a transformer made off
A
Two coils of wire wound into an iron core
2
Q
What does the effect of electromagnetic induction course on the transformer wire
A
It means that a voltage in one coil causes a voltage in the second coil
3
Q
How is electrical power measured
A
The potential difference Is a measure of the energy transfers by each coloumb of charge that flows through a wire the current measures the number of coloumbs per second
4
Q
Why must the primary coil be equal to the power transfers away from the transformer in the secondary coil
A
Because energy cannot be created or destroyed so the power supplied to a trans former in the primary coil must be equal to the secondary coil
5
Q
What do transformers only work with
A
An alternating current
