Capacitor in parallel in a D.C. circuit.

• D+0+26

diagram for demo

Capacitor in parallel in a D.C. circuit. When switch S1 is closed, 12 V.D.C. is put across a 360 ohm slidewire rheostat. Moving the slider on the rheostat varies the voltage at 'A' from 0 to 12 V. When capacitor C (360 micro f) is not in the circuit (switch S2 open), rapidly moving the rheostat slider causes voltmeters 1 and 2 to swing quickly and equally to read voltage changes. When C is in the circuit (S2 closed), voltmeter 1 swings quickly to read voltage changes, but voltmeter 2 responds slowly. Thus, when C is in the circuit, time variations are smoothed out.

Related Demos

D+0+60 Energy Stored in Dielectric D+0+1 Attraction between plates of a capacitor causes attachment of plates when insulator is introduced. D+0+0 Attraction between horizontal plates of a charged capacitor. D+0+2 Various capacitors to show. D+0+4 Parallel plate capacitor with dielectric materials and electroscope. D+0+6 Capacitor doorbell driven by Van de Graaff generator. D+0+8 Series capacitor array. D+0+10 Parallel capacitors array: A charged capacitor charges the others. D+0+12 Visual charge/discharge of a capacitor through a load. D+0+14 Computer demo: Charge/discharge of a capacitor, runs at least 1 min. D+0+16 Discharging a capacitor through a lamp. D+0+18 Capacitors with a series neon bulb on A.C. and D.C. D+0+20 Capacitor in series in an audio circuit: High pass filter. D+0+22 Effects of changing a D.C. voltage in a series RC circuit. D+0+24 Capacitor in parallel in an audio circuit: Low pass filter. D+0+28 Energy storage in a commercial capacitor. Loud bang! D+0+30 Oscillator made with resistor, capacitor and neon lamp. D+0+32 Same as D+0+30 using speaker for audio tone generation. D+0+34 Same as D+0+30 using oscilloscope to display waveform. D+0+5 Force on a dielectric in a capacitor D+0+35 Applet: Capacitor Lab D+0+40 Applet: Circuit Construction Kit (AC+DC), Virtual Lab D+0+45 Applet: Water Droplets in Electric Field D+0+50 Applet: RC Circuits D+0+55 Applet: CR Filter's Response (Analog)