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The equation of a capacitor is dv/dt = i/c. The capacitor resists a change in voltage, inversely proportional to its capacitance. One way to measure capacitance is to plot voltage and current through a resistor following a voltage step change. The slope at any point will give you the answer. Another way is to measure the resonant frequency in circuit with an inductor. Another way is with a Maxwell bridge. See "How do you draw the vector diagram of maxwell's capacitance bridge?"
What else can I help you with?
What is an nF?
If its capacitors you are talking about, it stands for nanoFarad and it is a unit of measure.
What is the unit of measure of capacitor?
Capacitors are measured in Farads or microfarads.
Reactance in inductors and capacitors is expressed in which unit of measure?
ohm
What if four capacitors of equal value are in series?
The total capacitance is one fourth of the capacitance of the individual capacitors. The voltage rating is four times the voltage rating of the individual capacitors (however to prevent uneven charging of the four capacitors and failure of one or more they must be paralleled with a voltage divider composed of four equal value resistors).
Why does generally capacitors are in pico or nano farads not in kilo or mega farads?
Large value capacitors are difficult to make (large value inductors are even harder to make) and take up large volumes of space. One farad capacitors are available in electrolytics, but are about the size of soup cans. If they were made, kilo & mega farad electrolytic capacitors would have volumes of roughly a thousand & a million soup cans respectively! Nonelectrolytic capacitors would be far larger!!!
What is difference between variable capacitor and fixed capacitor?
variable capacitors are those capacitors which can be intially or randomly canged by the user for example radio tunning.whereas fixed capacitors are those whose value is fixed and can't be changed. sohaib
Physics numerical four capacitors each of 2micro farad are connected in such a way that the total capacitance is also 2 micro farad show what combination gives this value?
In order to connect four 2 microfarad capacitors such that the total capacitance is still 2 microfarads, connect two pairs of capacitors in series, and then connect the pairs in parallel. It does not matter, since all four capacitors are equal in value, if the center point is connected together or not.
Function of dielectric in a capacitor?
The main role of dielectrics in capacitors is to increase the value of capacitance of the capacitor.
Why aren't inductors used in timer circuits?
Mostly because large value capacitors are less expensive and smaller than large value inductors.
Are capacitors polarity sensitive?
The capacitors those are polarity sensitive are called electrolytic and tantalum capacitors. These capacitors are labeled as positive and negative.
Absolute value is a measure of?
Absolute value is a measure of distance.
How are capacitors rated?
Capacitors are rated in Microfarads
