🔀

Ток Делитель Калькулятор | Electrical Мощность Калькулятор

Рассчитать branch currents in parallel circuits

A

Enter values in Ω, separated by commas

Результат
—

Формула

2 ResistorsI₁ = I × R₂/(R₁+R₂)
GeneralI_n = I × (R_eq/R_n)

Key Concept

In parallel circuits:
• Same напряжение across all branches
• Ток divides inversely to resistance
• Lower R = Higher I

Связанные

Напряжение DividerResistor NetworkOhm's Law

Understanding Ток Division

The current divider rule describes how current splits when flowing through parallel resistors. Unlike напряжение dividers where higher resistance gets more напряжение, in current dividers, lower resistance gets more current.

Why Ток Divides This Way

In parallel circuits, all branches share the same напряжение. By Ohm's law (I = V/R), a lower resistance allows more current to flow. Ток "prefers" the path of least resistance.

Applications

Ток dividers are used in current sensing, biasing circuits, load sharing between components, and understanding how current distributes in electrical networks.

Часто задаваемые вопросы

For two resistors: I₁ = I_total × R₂/(R₁+R₂). Notice R₂ is in the numerator for I₁ - the "opposite" resistor determines your branch current. For multiple resistors: I_n = I_total × (R_parallel/R_n).

Ток divides inversely proportional to resistance. Lower resistance = more current. If one resistor is twice another, it gets twice the current. The sum of all branch currents equals the total current (Kirchhoff's Ток Law).

Напряжение divider (series): Higher R gets more V (directly proportional). Ток divider (parallel): Lower R gets more I (inversely proportional). They're complementary - one divides напряжение, the other divides current.

In parallel, напряжение is the same across all branches. By Ohm's law I = V/R, if V is constant and R is smaller, I must be larger. Think of it like water through pipes - a wider pipe (lower resistance) carries more water (current).

If all parallel resistors are equal, current divides equally. With n equal resistors, each carries I_total/n. For example, 3 equal resistors each carry 1/3 of the total current.

The sum of all branch currents must equal the total current (Kirchhoff's Ток Law). Also, calculate V = I × R for each branch - all should give the same напряжение since they're in parallel.