Table of Contents
Why is it not possible for the current in an inductor to change instantaneously?
The current in an inductor cannot change instantaneously because it implies an infinite voltage will exist, which isn’t going to happen. This reluctance to change is because of the energy stored in the inductor’s magnetic field. The current in an inductor does not (will not) change instantaneously.
Why does capacitor does not allow sudden change in voltage?
Explanation: Capacitors are in series. Explanation: Capacitor does not allow sudden changes in voltage because these changes occur in zero time which results in the current being infinity, which is not possible.
Can current rise instantly through an inductor?
We now know that the current can not change instantaneously in an inductor because for this to occur, the current would need to change by a finite amount in zero time which would result in the rate of current change being infinite, di/dt = ∞, making the induced emf infinite as well and infinite voltages do no exist.
Can voltage across a capacitor change instantaneously?
Capacitors and inductors store electrical energy—capacitors in an electric field, inductors in a magnetic field. This isn’t physically possible, so a capacitor’s voltage can’t change instantaneously.
Why do inductors cause voltage spikes?
Inductive flyback refers to the voltage spike created by an inductor when its power supply is suddenly reduced or removed. This voltage spike occurs because the current flowing through the inductor cannot change instantly. The rate at which the current can change is limited by the inductor’s time constant.
Do you think ideally the voltage across an inductor can change instantaneously explain?
In order to describe the voltage–current relationship in capacitors and inductors, we need to think of voltage and current as functions of time, which we might denote v(t) and i(t). – v i v = L di dt . An inductor’s current can’t change instantaneously, and inductors oppose changes in current.
Why does voltage leads current in an inductor?
The voltage across an inductor “leads” the current because of the Lenz’s law. Therefore, the phasor representing the current and voltage would be given as in.