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March 28, 2015

March 28, 2015

Posted by **Sandra** on Sunday, February 28, 2010 at 7:26am.

I think that the capacitance would be halved, is this correct?

Also if two different capacitors (different material but all other parameters are the same except the dielectric constant) are being compared, would the one with the higher dielectric constant have a higher capacitance?

- Physics -
**drwls**, Sunday, February 28, 2010 at 8:13amFirst question: It would stay the same. The effect of doubling the gap is to cut C in half, but changing K from 1 to 2 doubles the value of C. The two effects cancel out.

Second question: Higher dielectric constant, K ,means higher capacitance.

The polarization of material between the plates lets you store more charge Q at a given voltage V. (Higher Q/V)

Try to learn the plate capacitor formula

C = K*(epsilono)*A/d

A is the plate area and d is the gap between the plates.

Epsilon-zero is a constant of nature with dimensions of farads per meter

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