why the current leads voltage in the case of a capasitor
- 9 Answers
- 18502 Views
- Infosys, I also Faced
- E-Mail Answers
Answer Posted / pancham
Pure capacitive circuit: capacitor voltage lags capacitor
current by 90o
pure capacitive circuit waveforms. plz plot the wave form
b/w current &voltage.
Remember, the current through a capacitor is a reaction
against the change in voltage across it. Therefore, the
instantaneous current is zero whenever the instantaneous
voltage is at a peak (zero change, or level slope, on the
voltage sine wave), and the instantaneous current is at a
peak wherever the instantaneous voltage is at maximum
change (the points of steepest slope on the voltage wave,
where it crosses the zero line). This results in a voltage
wave that is -90o out of phase with the current wave.
Looking at the graph, the current wave seems to have
a “head start” on the voltage wave; the current “leads” the
voltage, and the voltage “lags” behind the current.
| Is This Answer Correct ? | 13 Yes | 3 No |
Post New Answer View All Answers
armature winding of dc machine produce alternating emf then it convert in to dc by using commutator.But only we consider armature resistance why don't we consider inductive reactane effect?
What happens to a line-frequency of high-frequency transformer when it is first energized/ re-energize?
How RTCC panel is working and give single line diagram for RTCC with transformer?
What does a Bode plot tell you?
what transformer we used normally and upto which kva?
HOW WE CALCULATE CURRENT IF THERE ARE NOT PRESENT ANY AMMETER OR MULTIMMETER??????
if 12v battery get discharged for 2 months after if we put charge it will charge again?how much time it will take to charge?
what is the relationship between current&voltage in practical purpose ?
standard earthing rating for power line..
What is the dependency of stiffness on load angle??
What is the ideal position cooling fan inside the dc motor?
Please explain, how to test vector group of tranformer(Delta y1) . Thank
What is Bolted fault?
L.A. (Lightening Arrester) is located at a place from where transmission line enters the transmitting substation. So L.A. (Lightening Arrester) is the first equipments which has to encounter with lightening, high voltage surges and switching surges. It has to absorb energy of lightening, high voltage surges, and switching surges. L.A. (Lightening Arrester) is made up of layers of semiconductors. If these layers can not tolerate energy released by lightening, high voltage surges, and switching surges the L.A. (Lightening Arrester) blasts.
Can anyone please give me the parameters , formula needed to calculate the circuit breakers for building services.Thanks
