Do capacitors have uniform electric field?

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Flo Barton asked a question: Do capacitors have uniform electric field?
Asked By: Flo Barton
Date created: Wed, Apr 28, 2021 11:22 PM
Date updated: Wed, Jun 22, 2022 12:50 PM

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fig 2: yeah. A capacitor can have a non uniform electric field between its plates. The physical shape of the plates is majorly responsible for this.

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The answer has to be 'no', because doubling the distance between plates of a capacitor doubles the voltage across them (and V = E d). And if the electric field intensity remains constant (it's just force acting on unit charge), then the force acting on the test charge will be the same no matter how far apart the plates are.

A capacitor can have a non uniform electric field between its plates. The physical shape of the plates is majorly responsible for this. I’m not good at drawing :p Don’t mind :D

by a static uniform electric field E =zˆEo within the medium separating the plates, which is uniform and charge-free. We shall neglect temporarily the effects of all fields produced outside the capacitor if its plate separation d is small compared to its diameter, a common configuration. Thus Eo = v/d [V m-1] (3.1.2).

If the gap between the capacitor plates is constant, as in the parallel plate model above, the electric field between the plates will be uniform (neglecting fringing fields) and will have a constant value = /. In this case the stored energy can be calculated from the electric field strength

No, but you're getting closer! The field from a point charge falls off as one over distance squared, that from a line charge as one over distance, but the field from a charged plane is uniform. Nov 16, 2010 #6

Do capacitors have uniform electric field? fig 2: yeah. A capacitor can have a non uniform electric field between its plates. The physical shape of the plates is majorly responsible for this. Why is capacitance inversely proportional to electric field?

A capacitor is a device which stores electric charge. Capacitors vary in shape and size, but the basic configuration is two conductors carrying equal but opposite charges (Figure 5.1.1). Capacitors have many important applications in electronics. Some examples include storing electric potential energy, delaying voltage changes when coupled with

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