Transformers: Electromagnetic Induction at Work (VCE SSCE Physics): Flashcards

Generating current with changing magnetic field near wire

Device changing voltage via electromagnetic induction in AC

AC creates changing flux; DC flux constant, no induction

Increases magnetic flux linking the coils

$\frac{V_1}{V_2} = \frac{N_1}{N_2}$

$N_2 > N_1$ (more turns on secondary)

$N_2 < N_1$ (fewer turns on secondary)

$P_1 = P_2$ or $V_1I_1 = V_2I_2$

Down proportionally (power conserved)

98-99%