1. The ideal model of two oppositely charged conducting plates with surface charge densities says that...

1. The ideal model of two oppositely charged conducting plates with surface charge densities says that there is a constant electric field between the plates and zero field outside. How does your model differ from the ideal model? Why does it differ?

2. Create your own question about electric fields and/or potentials that could be answered using this applet.

The “Charges and Fields” applet here: https://phet.colorado.edu/en/simulation/charges-andfields.

Solutions

Expert Solution

The ideal model takes the assumption that the space in between the plates is uniform. That is, there is no other potentials, or no dielectric material to ploarize. If there is an extra potential, the field will vary. That is, dielectrics responds to the field that is produced between the plates in the form of polarization. If the dielectric is not uniform or its permittivity varies with distance within the plates, field also varies. That is why the ideal condition is said to be not possible at all.

Q1. A parallel plate capacitor is formed by using two parallel plates. We measure the capacitance with and without a dielectric of known permittivity. What will be the result? Are the two capacitances same? Why?

genius_generous answered 1 year ago

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