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Capacitance is defined as the maximum charge stored in a capacitor per unit potential difference. According to this definition, the formula should be :
Capacitance = Charge stored / Potential Difference
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoif capacitors are connected parallel across the source the formula will be,
c=c1+c2+c3+..
if c1,c2,c3..... are the capacitors..
if they are connected in series then the formula will be..
c=1/c1+1/c2+1/c3..
Wiki User
∙ 10y agoIn a dc circuit capacitors are used for smoothing a rectified ac supply.
For a full wave rectifier circuit on a 50 Hz supply, the ripple voltage magnitude is set by the voltage drop across the reservoir capacitor in the 10 ms between charging pulses.
The basic formula is that the rate of change of voltage in volts/sec is the current in amps divided by the capacitance in Farads.
The drop in 10 ms equals approximately the current divided by the capacitance in millifarads times 10. So for a 1 amp supply and a 1 volt ripple, the capacitance should be 10 millifarads or 10,000 microfarads.
Wiki User
∙ 13y agoThe unit, Farad, is Coloumb / Volt, so the dimensions are charge / voltage.
To reduce to base SI units:
Coloumb is ampere x second.
Volt is joule / coloumb.
Joule is newton x meter.
Newton is mass x acceleration, that is, kilogram x meters / seconds2.
Wiki User
∙ 15y agoFor capacitors in parallel: c1 + c2 + c3 + ... + cn = ceq
For capacitors in series: 1/c1 + 1/c2 + 1/c3 + ... + 1/cn = ceq
Wiki User
∙ 14y agoIf C1 and C2 are the capacitor values in farads, then Ct = total capacitance = C1*C2 / (C1+C2). This is the same formula for resistors in parallel.
Wiki User
∙ 13y agoCapacitors in parallel are the equivalent to a single capacitor whose value is equal to the SUM of all the individual capacitors.
Wiki User
∙ 16y agoC=Q/V
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What is the difference between capacitance and capacity?
Capacitance is quite literally the capacity to hold charge at a given potential difference.
What factors affect the reactance of a capacitor?
Reactance (in ohms) = 1/(2 pi * capacitance * frequency). Capacitance is in farads. Frequency is in Hertz (cycles/second). So increasing capacitance or increasing frequency will decrease reactance.
What happens to capacitance if voltage is increased?
The capacitance will remain the same. However, the energy stored (Ie. number of electrons displaced) will increase.
What are the methods to find capacitance of a capacitor?
You could measure it with a Capacitance meter. Or you could use the formula:In a parallel plate capacitor, capacitance is directly proportional to the surface area of the conductor plates and inversely proportional to the separation distance between the plates. If the charges on the plates are +q and −q, and V gives the voltage between the plates, then the capacitance C is given byFor further info on the total value of capacitance in series or parallel, Google it.
What is stray capacitance and how is different from ordinary capacitor?
Any two adjacent conductors can be considered a capacitor, although the capacitance will be small unless the conductors are close together for long. This (often unwanted) effect is termed "stray capacitance". Stray capacitance can allow signals to leak between otherwise isolated circuits (an effect called crosstalk), and it can be a limiting factor for proper functioning of circuits at high frequency. Stray capacitance is often encountered in amplifier circuits in the form of "feedthrough" capacitance that interconnects the input and output nodes (both defined relative to a common ground). It is often convenient for analytical purposes to replace this capacitance with a combination of one input-to-ground capacitance and one output-to-ground capacitance. (The original configuration - including the input-to-output capacitance - is often referred to as a pi-configuration.) Miller's theorem can be used to effect this replacement. Miller's theorem states that, if the gain ratio of two nodes is 1/K, then an impedance of Z connecting the two nodes can be replaced with a Z/(1-k) impedance between the first node and ground and a KZ/(K-1) impedance between the second node and ground. (Since impedance varies inversely with capacitance, the internode capacitance, C, will be seen to have been replaced by a capacitance of KC from input to ground and a capacitance of (K-1)C/K from output to ground.) When the input-to-output gain is very large, the equivalent input-to-ground impedance is very small while the output-to-ground impedance is essentially equal to the original (input-to-output) impedance.
A 10 uF and a 30uF are placed in parallel. What is the resulting capacitance?
Total parallel capacitance is the sum of the value of the parallel capacitors. It uses the formula - Total Capacitance = C1 + C2 + C3. Hopefully, you can do the math at this point.
What is the formula for calculating self capacitance of an inductor when the value of capacitance and frequency for two capacitors is given?
You seem to be mixing up your terminology. There is no such thing as 'self-capacitance of an inductor'! If you know the frequency and equivalent capacitance for two capacitors, then you can find the equivalent capacitive reactance of the capacitors, but that's not what you seem to be asking! I suggest you rephrase the question.
Definition of a capacitance in mosfet?
Capacitance in mosfet is of three types: gate capacitance diffusion capacitance routing capacitance Gate capacitance: limits the speed of the device t which it can be operated Diffusion capacitance: It is the capacitance due to charge carriers between drain and source. Routing capacitance: It is the capacitance of the metal which is deposited on the top of oxide layer.
What is the type of capacitance effect exhibited in P-N junction when it is reverse biased?
1. Transition capacitance 2. Diffusion capacitance 3. Space charge capacitance 4. Drift capacitance
How do you calculate the stray capacitance?
stray capacitance calculation
What is the difference between capacitance and stray capacitance?
Capacitance is an ability to store an electric charge. "If we consider two same conductors as capacitor,the capacitance will be small even the conductors are close together for long time." this effect is called Stray Capacitance.
Effects of stray capacitance in ac fan out?
due to the load gates capacitance values,there is a increased load capacitance on the driving gate
Are arteries often referred to as capacitance vessels?
No. Capacitance vessels refer to site where most volume of blood is found. Veins are capacitance vessels.
What is pn junction capacitance?
The charge inside of a p-n diode with a connected voltage variety yields a capacitance is need to add circuit model of a p-n diode. The capacitance connected with the charge variety in the exhaustion layer is known as the intersection capacitance, in the same process capacitance connected with the abundance bearers in the semi impartial district is known as the dissemination capacitance.
What is meant by transistion and space charge capacitance of a diode?
Diffusion capacitance is the capacitance due to transport of charge carriers between two terminals of a device. - Amog This diffusion capacitance is due to depletion capacitance which is a function of forward bias applied to emitter junction of a transistor and due to diffusion capacitance which a function of transconductance of the transistor. Its value is 100 pF. Tirupanyam B.V
When was Capacitance Electronic Disc created?
Capacitance Electronic Disc was created in 1981.
Which junction has least junction capacitance?
point contact has the least junction capacitance
