Physics Assignment Help With RC-Circuits

  1. Home
  2. Physics
  3. DC Circuit
  4. RC-Circuits

11.11 RC-Circuits

11.11.1 Charging of Capacitor

The figure shows a circuit arrangement in which a capacitor in series with a resistor is connected across a battery of emf E through a switch S.

When the switch S is closed the current starts flowing and the capacitor starts charging. If I be the instantaneous charge on the capacitor, then applying Kirchoff’s Voltage Law.

electromotive force

Since I = physics online tutoring, the above equations may be rearranged as

RC physics online tutoring = CE - q

high school physics

or physics online tutor

After integrating we get

ln |CE - q| = physics homework help

At t = 0, q, = 0 Þ K = ln |CE|

\ q = CE ( 1 - e-t/RC)

The instantaneous potential difference across the capacitor is

v = online tutoring

The instantaneous current through the circuit is

i = physics experiments

The graphs showing the variation of q, v and i with time are shown as below.

physics tutor

The charging of a capacitor may be summarised as

q = Qmax (1 - e-t/t)

v = Vmax (1 - e-t/t)

i = Imax e-t/t

Where Qmax = CE; Vmax = E; Imax =E/R and t = RC (time constant)

The time constant t is defined as the time during which charge on the capacitor rises to 0.63 times the maximum value.


when t = t, q = qmax (1-e-1)

or q = 0.63 qmax physics help

RC circuits Assignment Help

Email Based Assignment Help in RC-Circuits

We are the leading online Assignment Help provider. Find answers to all of your doubts regarding the RC-Circuits. provide homework, Assignment Help to the school, college or university level students. Our expert online tutors are available to help you in RC-Circuits. Our service is focused on: time delivery, superior quality, creativity and originality.

Following are some of the areas in physics DC Circuit which we provide help:

RC-Circuits Circuit Assignment Help | DC Circuit Problems | Electromotive Force Problems | Physics Online Tutor | Physics Assignment Help | Physics Tutors | Physics Homework Help | Physics Tutor | Physics Help | Physics Projects | Physics Problems | Physics Online Help | Physics Online Tutoring | High School Physics | Homework Tutor | Physics Experiments | Online Tutoring

Improve Your Grades with Custom Writing Help
Homework Help
Writing Help
Editing Services
Plagiarism check
Proofreading services
Research Project help
Custom writing services
E learning blogs

Disclaimer : The study tools and academic assistance/guidance through online tutoring sessions provided by AssignmentHelp.Net is to help and enable students to compete academically. The website does not provide ghostwriting services and has ZERO TOLERANCE towards misuse of the services. In case any user is found misusing our services, the user's account will be immediately terminated.