Flux and Induced Voltage

Changing Flux Induces Voltage

The induced voltage cites before and after flux sources. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.

highlighted = computed this step

Changing source-bound flux induces voltage

Flux changes from 2 to 14 webers, so the change is 12 webers.

ΔΦ=14  −  2=12 Wb\Delta\Phi=14\;-\;2=12\ \mathrm{Wb}
Induced emfChanging source-bound flux sets voltage.B=1 TA=2 m^2Phi=2 WbB=7 TA=2 m^2Phi=14 WbV=4 Vopposes increase

Voltage is flux change divided by time

Over 3 seconds, the induced voltage magnitude is 4 volts.

∣V∣=12/3=4 V|V|=12/3=4\ \mathrm{V}
Induced emfChanging source-bound flux sets voltage.B=1 TA=2 m^2Phi=2 WbB=7 TA=2 m^2Phi=14 WbV=4 Vopposes increase