Calculadora de Resistencia Eléctrica
Calcula la resistencia eléctrica usando la ley de Ohm. Ingresa voltaje y corriente para obtener la resistencia en ohmios al instante.
V
A
Resistencia
24.0000 Ω
Resistance vs Voltage
Fórmula
Resistance
Resistance measures how strongly a component opposes the flow of electric current.
Formula
R = V / I
Derived from Ohm's law. The unit is the ohm (Ω), named after Georg Ohm.
Ejemplo Resuelto
A 12 V battery drives 0.5 A through a resistor.
- 01R = V / I
- 02R = 12 / 0.5
- 03R = 24 Ω
Preguntas Frecuentes
What factors determine the resistance of a wire?
Resistance depends on the material (resistivity), length, cross-sectional area, and temperature: R = rho * L / A.
Does resistance change with temperature?
Yes. For most metals, resistance increases with temperature. For semiconductors, it typically decreases.
What is a resistor color code?
A system of colored bands on resistors that encode their resistance value. Each color represents a digit or multiplier.
Aprender