(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Given an electric potential of Vo*sin(wt). This is applied to a parallel plate capacitor of area S, separation d and capacitance C. The questions are

a) What is charge Q on the plates?

b) Find the electric displacement current

c) Calculate the current in the wire.

2. Relevant equations

a) Q=CV

b) I=(epsilon)*d(phi)/dt

c) i=dQ/dt

3. The attempt at a solution

for part a, i got Q=CV=C*Vo*sin(wt)

for part b, i got I=(epsilon)*w*cos(wt)

for part c, i got i=C*w*cos(wt)

is this right, because i have a feeling that this is a little too easy of an answer.

why does the displacement current differ from the current in the wire?

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Problem on capacitors.

**Physics Forums | Science Articles, Homework Help, Discussion**