7 ta tushuncha
Tugunga kirayotgan toklarning algebraik yig'indisi nolga teng: ΣI_kirish = ΣI_chiqish
Yopiq kontur bo'yicha kuchlanish tushishlarining algebraik yig'indisi nolga teng: ΣU = 0
Reaktiv quvvat: Q = U × I × sin φ (var); φ — kuchlanish va tok orasidagi faza burchagi
Ko'rinma (to'liq) quvvat: S = U × I (VA); quvvat uchburchagi: S² = P² + Q²
Kondensatorda to'plangan zaryad: Q = C × U; Q — kulon (C), C — farad (F), U — volt (V)
Induktiv reaktans: XL = 2πfL (om); f — chastota (Hz), L — induktivlik (H); chastota ortishi bilan XL ortadi
Sig'imli reaktans: XC = 1/(2πfC) (om); f — chastota (Hz), C — sig'im (F); chastota ortishi bilan XC kamayadi