Why can t resistors store energy

Can a resistor store energy?

Resistor can’t store energy. Neither can be a source on its own. Resistor always dissipates energy in the form of heat. Other elements like inductor and capacitor store energy in the magnetic and electric fields respectively. Examples for active devices are operation amplifier (OPAMP) etc. A resistor consists of two terminals.

Does a resistor lose energy?

@GM: No, because in any moment in which there is a voltage across the resistor and a current flowing through it, energy is lost. A resistor will lose it through heat. Something like a motor will lose it through mechanical work. A capacitor or inductor will lose it by building up energy in its field.

Why do resistors have no reactive effects?

These concepts are in theory lumped circuit. For real resistors, you can always find reactive effects, but are negligible for normal applications; but may be noticeable at high frequencies. If you deal with the theory of lumped circuits, the answer is that the resistor has no reactive effects due to their inability to store energy.

What is the difference between a resistor and a capacitor?

In the case of a capacitor, the energy is stored as electric field, whereas in the case of the inductor, the energy is stored as magnetic field. For the resistor, by definition, this component does not have the ability to store energy, if not all of the energy that is given, is transformed (usually heat).

How does a resistor lose heat?

A resistor will lose it through heat. Something like a motor will lose it through mechanical work. A capacitor or inductor will lose it by building up energy in its field. For a resistor, it will generate heat - there's no other way for it to behave.

What power is absorbed by a resistor?

In a circuit, a voltage drop across a resistor in the direction of positive current flow represents energy absorbed. This means that the power absorbed by a resistor is given by the product of the voltage drop across it and the current flowing through it.