What is capacitar and princciple of capacitance?derive expression for its capacitance?
Answers
Answered by
0
capacitor is a device which is used to stored of electricity
Answered by
1
capacitor is a device which is used to store charge and it works on the principle that it stores charge and produces electricity when there is no external current
derivation for parallel plate capacitor
electric field on both plates(E) = sigma/Eo +sigma/Eo
=sigma/2Eo
=2Q/2AEo=Q/AEo
where sigma is surface charge density
We know , V=E.d=Qd/AEo
and also Q=CV
C=Q/V
=Q/(Qd/AEo)
=AEo/d
derivation for parallel plate capacitor
electric field on both plates(E) = sigma/Eo +sigma/Eo
=sigma/2Eo
=2Q/2AEo=Q/AEo
where sigma is surface charge density
We know , V=E.d=Qd/AEo
and also Q=CV
C=Q/V
=Q/(Qd/AEo)
=AEo/d
Attachments:
Similar questions