The Voltage Across An Inductor Cannot Change Instantaneously

- December 25, 2018

It might mean that the voltage across a capacitor cannot change instantanteously because that would demand an infinite current. Discontinuously the derivative is not finite.

Lc Relaxation Oscillator Critically Damped

Understanding Switching Power Supplies Part 1

Basic Electrical Circuits Dr Nagendra Krishnapura Department

When the switch is first closed the current through the inductor is zero because it cannot change instantaneously.

The voltage across an inductor cannot change instantaneously. This means that the inductor acts like an open circuit so all the voltage is across the inductor. 4 practical nonideal inductor has a significant resistive component. The voltage across a capacitor cannot change instantaneously but displacement current most certainly can.

I mean i know that voltage across a capacitor cannot change instantaneously and current thro the inductor cannot change instantaneously so why is that so. If the voltage changes instantly from one value to another ie. This implies that an infinite current would be required to instantly change the voltage.

How and why inductor does not allow sudden change in. Why capacitor voltage doesnt change in zero time like resistors. As the current ramps up from zero the magnetic field builds in strength.

1 voltage across an inductor is 0 when the current is constant 2 the current through an inductor cannot change instantaneously opposition to change in current flowing 3 ideal inductor does not dissipate energy. In analyzing the transient behavior of a 2nd order circuit we generally use the fact that what two things cannot change instantaneously the voltage across a capacitor and the current through an inductor. In an ideal world where a capacitor has no series inductance and an inductor has no parallel capacitance and voltage and current sources can provide voltages and currents with a step shaped profile the current into a capacitor and the voltage over an inductor can change abruptly.

If vc is a triangle wave its derivative has jump discontinuities or instantaneous changes. If vc is constant dvcdt is zero. Why capacitor voltage does not changes instantaneously.

Instantaneous response of capacitors and inductors hi can anybody explain me why inductors and capacitors doesnt respond instantaneously. Current in a capacitor is related to voltage by. Why the voltage across a capacitor cannot change instantaneously.

Since an infinite current is not physically realizable that means that the voltage cannot change instantaneously.