Tagged Questions

The ability of an object to store electric charge.

1answer
113 views

Smoothing capacitor

Suppose a capacitor of capacitance $C$ is being used in a rectifier to smooth out the p.d. across a resistor of resistance $R$. What is the effect on the smoothing curve when the $R$ is lowered? The ...
6answers
1k views

Why do we use capacitors when batteries can very well store charges?

Can batteries be used instead of capacitors? I am trying to figure out a basic, superficial and any obvious difference between the two.
3answers
317 views

How does the voltage across an inductor and a capacitor vary in series LCR circuit about resonance?

I am aware that at resonance, the voltage across the inductor and the capacitor are equal in magnitude and opposite in phase. However, I want to know how the voltage across $L$ and $C$ vary if I vary ...
1answer
123 views

what is the capacitance and inductance of an ideal wire?

I am reading a magazine for acoustics, one article is about the choice of speaker wire. The article said the ideal speaker wire should has no resistance, capacitance and inductance. I understand that ...
1answer
94 views

Displacement vector in parallel plate capactor

This ought to be simple, but I'm running into some questions... Let's say we have a parallel plate cap with some linear homogeneous dielectric media between the plates. The plates are distance $a$ ...
4answers
2k views

1answer
395 views