HI , I need help for this problem: A parallel- plate capacitor is being charged at a rate of I=0.2A. The plates have an area of 0.25m2and are separeted by 1 cm.. What is the value of Integral(B*dl)for a closed path midway between the plates and covering an area of 5.0X 10-2m2? my problem here is how to find the derivative of the flux, used in the expression of the Maxwell displacement current. I know that the flux=E*A but then I am stuck. Can I have some help? Thank you B.