Compute the all parts of given question:
Question: A simple series circuit consists of a 140 Ω resistor, a 21.0V battery, a switch, and a 1.50 pF parallel-plate capacitor (initially uncharged) with plates 5.0 mm apart. The switch is closed at t =0s.
Part I: After the switch is closed, find the maximum electric flux through the capacitor.
Part II: After the switch is closed, find the maximum displacement current through the capacitor.
Part III: Find the electric flux at t =0.50ns.
Part IV: Find the displacement current at t =0.50ns.
I need expert help to solve the above question. Thank you.