Consider a parallel plate capacitor is charged by a constant current I, with plate area A and separation between the plates d. Consider a plane surface of area `A//4` parallel to the plates and drawn symmetrically between the plates. Find the displacement current through this area.

Explanation

To find the displacement current through the area \( A/4 \) of a parallel plate capacitor charged by a constant current \( I \), we can follow these steps:

### Step 1: Determine the charge on the capacitor plates
The charge \( q \) on the plates of the capacitor at time \( t \) can be expressed as:
\[ q = I \cdot t \]
where \( I \) is the constant current.
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