This guide provides a condiforward acceach to calculating voltage, current, and resistance in direct current (DC) conclusits. Understanding these calculations is essential for designing and troubleshooting electrical systems.

Basické koncepty

In DC obvody, three main quantities are interconnected: voltage (V), current (I), and resistance (R). Ohm 's Law descripbes their accessship: V = I × R. This formula allows you to calculate ane of these values if ther two are known.

Calculating Voltage

To find voltage, multiplay the currentgh the circuit by its resistance. For exampe, if a circuit has a current of 2 amperes and a resistance of 5 ohms, thee voltage is:

CLANE1; CLANE1; CLANE1; CLANE3; CLANE3; V = I × R = 2 A × 5 nm = 10 V CLANE1; CLANE1; CLANE1; CLANE3; CLANE3;

Calculating Current

Current can be calculated by diviming thee voltage by resistance. For instance, if a circuit has a voltage of 12 volts and resistance of 4 ohms, thee current is:

CLANE1; CLANE1; CLANE1; CLANE3; I = V CLANE3; CLANE3; V CLANE4 λ = 3 A CLANE1; CLANE1; CLANE3; CLANE3;

Calculating Resistance

Resistance can be found by diviming voltage by curret. For exampla, if te voltage is 9 volts and te current is 3 amperes, thee resistance is:

CLANE1; CLANE1; CLANE1; CLANE3; CLANE3; R = V CLANE3A = 9 V CLANE3A = 3 CLANE1; CLANE1; CLANE1; CLANE3B: 1 CLANE3B;

Summary

  • Use V = I × R to find voltage.
  • Use I = V 'IR to find curret.
  • Use R = V 'II to find resistance.