capcitor/conductance
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capcitor/conductance

General properties of capacitor

  1. capacitor is an electrical device which can stored elctric charge as wellas electric potential energy.
  2. A capacitor is made of two conductor separated by very small distance(some time may only one plate)
  3. conductor of capacitor is known as plate of capacitor.
  4. The two plates of capacitor should be maintain at different potential
  5. the plate with higher potential is known as positive plate and the plate with lower potential is negative plate.

Properties of tipical capacitor 

  • The two plates of capacitor are equally and oppositly charge.
  •  The plate of capacitor which is connected with positive terminal of battery is known as positive plate and the plate with negative terminal is known as negative plate.
  • The net charge of capacitor is zero but the charge on positive plate is known as charge of the capacitor.
  • The potential difference between positive plate and negative plate is known as potential of capacitor.

    Q⇾Charge of capacitor
V+ - V-⇾V(potential of capacitor)

we say that 

Q ∝ V (charge directly proportional to potential)

so Q = CV

C⇾(+)constant

C⇾capacitance or capacity

Capacitance:-capacitance of any capacitor determines the amount of charge stored by the capacitor for the given potential .

Mathematically capacitance of capacitor is amount of charge stored by capacitor for the potential difference of one volt.

C=Q/V

if ,V=1 volt

C=Q

Calculation of Capacitance


Capacity Capacity of capacitor does not depend of charge and potential of the capacitor it depend on following factors
  • Size of plate
  • distance between plates 
  • the medium present of Capacitors depends on geometrical parameter.

✴️So ,the Capacitance of Capacitor depends on Geometrical parameter.



S.I Unit of Capacitance➝Farad(F
)
Practical Unit➝μF
μF=(1/1000000)F
1 nF=(1/1000000000)F
1pF=(1/1000000000000)F
S.I Unit=coulomb/volt(Dimension and Explanation)



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