A parallel-plate capacitor with circular plates of radius R is being discharged. The displacement current through a central circular area, parallel to the plates and with radius R/2, is 9.2 A. What is the discharging current?

The discharging current is

Explanation:

From the question we are told that  

     The radius of each circular plates is  R

     The displacement current is  

      The radius of the central circular area is  

The discharging current is mathematically represented as

where A is the area of each plate which is mathematically represented as

and   k is central circular area which is mathematically represented as

So  

substituting values

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

the assestment will probley apele with cause and effect