Cómo convertir voltaje eléctrico en voltios (V) a resistencia eléctrica en ohmios (Ω).
Puedes calcular ohmios a partir de voltios y amperios o vatios, but you can't convert volts a ohms sence volt and ohm units do not measure the same quantity.
Accodeng a ley de Ohm, the resistance R en ohmios (Ω) is equal a the voltage V en voltios (V) divided by the current I in amperios (A):
R(Ω) = V(V) / I(A)
So ohms are equal a volts divided by amperios:
ohmios = voltios² / amperios
o
Ω = V² / A
Calculate the resistance en ohms of a resisar when the voltage is 5 volts and the current is 0.2 amperios.
The resistance R is equal a 5 volts divided by 0.2 amperios, which es igual a 25 ohms:
R = 5V / 0.2A = 25Ω
La potencia P is equal a the voltage V po la corriente I:
P = V × I
La coriente I is equal a the voltage V dividido po la resistencia R (ley de Ohm):
I = V / R
Así que la potencia P is equal a
P = V × V / R = V 2 / R
Po lo tanto, la resistencia R en ohmios (Ω) is equal a the square value of voltage V en voltios (V) divided by the power P en vatios (W):
R(Ω) = V 2(V) / P(W)
So ohms are equal a the square value of volts divided by vatios:
ohmios = voltios²2 / vatios
o
Ω = V²2 / W
Calculate the resistance en ohms of a resisar when the voltage is 5 volts and the power is 2 vatios.
The resistance R is equal a square of 5 volts divided by 2 vatios, which es igual a 12.5 ohms.
R = (5V)²2 / 2W = 12.5Ω
