Elec Class
learn electricity hands-on
Solved exercise · level 3 of 5
Skills: Build, Calculate
Two bells R₃ and R₄ (each 0.25 A at 12 V) are supplied through a line whose conductors (R₁ and R₂) are 1 Ω each. G is set to 12 V: V1 shows the bells get less.
Set G so that they get exactly 12 V (within 3 %).
Parametric exercise: the values change with every draw; these are one example.
Total I = 2 × 0.25 A; drop = 2 × 1 × I = 13 − 12 V; the source must supply 13 V.