Why does the rate of change of potential difference between two capacitor plates decrease as the capacitor discharges?

Current, I, is related to voltage by Ohm's law, I=V/R. As the capacitor discharges, the current will decrease as less charge is "released" from the capacitor. From Ohm's law, we would expect lower currents to result in lower potential differences (assuming a constant resistance), thus as the current decreases, the potential difference also decreases, at an exponential rate.

Answered by Francis T. Physics tutor

8570 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

Discuss how the graph of orbital velocities in rotational galaxies against distance from the galactic centre implies the existence of dark matter.


Derive the Drift Velocity Equation


Why does the Photoelectric Effect lead to the conclusion that classical physics cannot be all of physics?


A uniform plank of wood of mass 32 kg and length 4.0 m is used to cross a ditch. In the ditch is a rock, which is used to support the plank horizontally 0.80 m from one end. The other end is supported by the bank. Calculate the rock's supporting force.


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences