Contents
- 1 Can voltage drop be greater than source?
- 2 What are the differences in behavior between the capacitor and inductor in an AC circuit?
- 3 Can the voltage drop?
- 4 Can the voltage drop across the inductor or capacitor in series?
- 5 Why does voltage leads current in an inductor?
- 6 How is an inductor different from an AC power source?
- 7 How are inductors and capacitors related in a circuit?
- 8 What happens if you add voltage to an inductor?
Can voltage drop be greater than source?
Yes; the voltage drop across the inductor or the capacitor in a series LCR circuit can be greater than the applied voltage of the a.c. source beacuse as VC and VL have opposite faces, VC or VL may be greater than V.
What are the differences in behavior between the capacitor and inductor in an AC circuit?
Capacitor stores energy in the form of electric field, whereas Inductor stores energy in the form of magnetic field. In an AC circuit for capacitor, the current leads voltage by 90 degrees and in case of inductor current lags voltage by 90 degrees. …
What is the phase relationship between current and voltage in an inductor?
The phase relationship between current and voltage in an AC circuit containing only inductor is that voltage always leads the current flowing through the circuit by 90 degree or pi/2 radians. When a sinusoidal input is provided to the circuit, the current increases from zero to the maximum value.
Can the voltage drop?
Voltage drop is the loss of voltage caused by the flow of current through a resistance. Any length or size of wires will have some resistance, and running a current through this dc resistance will cause the voltage to drop.
Can the voltage drop across the inductor or capacitor in series?
The answer is Yes. Yes, the voltage drop across the inductor or the capacitor in a series LCR circuit can be greater than the applied voltage of the AC source. Hence, the summation of their voltage cannot be done algebraically.
What is the phase relation between current and voltage?
There is no phase difference between voltage and current and the current and voltage is said to be in-phase. Complete step by step answer: It is given that the circuit is pure resistive which means that there is a resistor in the circuit along with an AC source.
Why does voltage leads current in an inductor?
Phasor Representation 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. Again, the phasors are vectors rotating in counter-clockwise direction at a frequency ν (you can see that the voltage leads the current).
How is an inductor different from an AC power source?
An inductor is simply a coil of wire (often wrapped around a piece of ferromagnet). If we now look at a circuit composed only of an inductor and an AC power source, we will again find that there is a 90° phase difference between the voltage and the current in the inductor.
How can a voltage across a capacitor be greater than the voltage?
Eventually the backwards voltage across the inductor causes the inductor current to go to zero. At that point, all the energy originally in the inductor when the switch closed has been transferred to the capacitor. This process can be repeated to reach arbitrarily large voltages on the capacitor in theory.
In circuits which have capacitors and inductors (coils) the phase relationships will be quite different. Consider now a circuit which has only a capacitor and an AC power source (such as a wall outlet).
What happens if you add voltage to an inductor?
If you were to break into this circuit and add even a small voltage in sync with the polarity of the current, the energy in the circuit would keep building up. Both the maximum current thru the inductor and the maximum voltage on the capacitor would increase. These would build indefinitely while you keep adding only a small voltage.