2007-02-12 19:10:05 · 5 answers · asked by nilamkura 2 in Science & Mathematics ➔ Engineering
a capasitor actually consists of 2 metal plates separated b/w air or a dielectric medium(insulating).due to which v see capacitor acts as an insulator 4 DC current.now talking about AC current travel....my friend u sure would have learnt about the phenonmena of electromagnetic induction in coils when an alternating current is produced as a result when the electric/magnetic flux changes.4 a capacitor due to input potential in one plate a field is induced b/w the plates.Now if v had given an AC input,v know the field will change according to the given voltage and an induced voltage is produced in the other plate,4 DC current the value of fileld is a constant,it does´nt change after it has formed,as a result the induction phenomena does not occur.....................happy........
2007-02-12 19:31:42 · answer #1 · answered by m_anilaj 1 · 0⤊ 0⤋
The capacitor is a charge storage device. It influences current by storing and releasing charge. Since that takes time, the capacitor will tend to resist rapid changes in voltage on it, and can be used to "smooth out" (filter) fast variations in current.
A capacitor will block DC current, since the plates are not in contact. However, AC current will pass through; so a capacitor will remove DC from a complex wave of current.
2007-02-12 19:14:54 · answer #2 · answered by gp4rts 7 · 0⤊ 2⤋
a capacitor stores potential energy.a start cap gives a boost on start up .and a run cap stores any xtra energy needed
2007-02-12 19:19:28 · answer #3 · answered by Anonymous · 0⤊ 1⤋
Is like a battery that the car uses so it wont drain the real battery it really works i know first hand
2007-02-12 19:13:08 · answer #4 · answered by enano 4 · 0⤊ 2⤋
V=IR?
2007-02-12 19:12:21 · answer #5 · answered by KH 3 · 0⤊ 2⤋