Confusion about Dielectrics and Potential Difference in Capacitors

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SUMMARY

The discussion clarifies the effects of inserting a dielectric material between the plates of a capacitor. When a dielectric is added, the potential difference (V) between the plates decreases while the charge (Q) remains constant, resulting in an increase in capacitance (C) as described by the formula C=Q/V. This relationship is not contradictory; rather, it highlights the fundamental principles of capacitor behavior in the presence of dielectrics. The confusion arises from a misunderstanding of how dielectric materials influence the electric field and potential difference.

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KayleighK
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I'm reading my physics textbook right now and it states that when you add a dielectric between two capacitors you are:
1. Increasing the potential difference between the two plates.
2. Increasing capacitance by decreasing V (Q/V=C)

Isn't this contradictory? I thought that V in the equation (Q/V=C) was the potential difference between the capacitor plates. Therefore, if you decrease V, you woul be lowering the potential difference between the plates, not increasing it. Can someone explain this to me? Thank you.
 
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It is contradictory.
The effect of inserting a dielectric material between the plates of a charged capacitor, is to reduce the pd between those plates. (Charge stays constant)
This has the effect of increasing the capacitance.
C=Q/V so if you decrease V you increase C.
It must be a misprint.
 

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