ohmic device造句

• The relationship between voltage and current is defined ( in ohmic devices like resistors ) by Ohm's Law.
• But more importantly : a diode is most certainly not an ohmic device; that is, it does not obey Ohm's law.
• Summarizing, for any truly ohmic device having resistance R, V / I = ?V / ?I = R for any applied voltage or current or for the difference between any set of applied voltages or currents.
• An element ( resistor or conductor ) that behaves according to Ohm's law over some operating range is referred to as an " ohmic device " ( or an " ohmic resistor " ) because Ohm's law and a single value for the resistance suffice to describe the behavior of the device over that range.
• In a true ohmic device, the same value of resistance will be calculated from R = V / I regardless of the value of the applied voltage V . That is, the ratio of V / I is constant, and when current is plotted as a function of voltage the curve is " linear " ( a straight line ).