transformers and energy - SP13 Flashcards
1
Q
what does current measure?
A
number of coulombs per second
2
Q
what t=is potential difference a measure of?
A
energy transferred by each coulomb of charge that flows through a wire
3
Q
why must power suplied to the primary coil be the same as the energy transferred away from the secondary coil?
A
enery cannot be created nor destroyed - all that goes in must come out
