Register to reply

RC and RL circuits

by ECE
Tags: circuits
Share this thread:
Nov18-07, 06:46 PM
P: 7
Does the capacitor acts as a current source and the inductor acts as the voltage source in the RC and RL circuits respectively? If so why does the capacitor not act as a voltage source and inductor not act as a current source?

Phys.Org News Partner Engineering news on
Tiny UAVs and hummingbirds are put to test
Britain to trial driverless cars from 2015
NIST corrosion lab tests suggest need for underground gas tank retrofits
Nov18-07, 07:59 PM
P: 1,636
No. Both the capacitor and inductor actually absorb energy. A fully charged capacitor (energized) will discharge nonlinearly into a resistive load. A current source in theory should supply constant current into any load.

A fully energized inductor (where current is flowing through it) will not supply a constant voltage into a load, as required by a voltage source. When the current through the coil is cut off, the magnetic field will collapse and release energy, thus inducing a voltage nonlinearly.

Register to reply

Related Discussions
Circuits (RC Circuits) Help! General Physics 6
RLC circuits Introductory Physics Homework 6
RC circuit question Introductory Physics Homework 1
DC Circuits Physics Learning Materials 0
Electric circuits problem (RL/C circuits) Introductory Physics Homework 3