Thus on the experiment part was conducted by me and the. Suppose we have the circuit below, with capacitor c, voltage source v and a toggle switch. An insulator can be glass, ceramic, plastic film, air, paper etc. Doc charging and discharging of a capacitor lab report.
The objective of this experiment is the study of charging and discharging of a capacitor by. When a capacitor is charged through a resistor from a dc power supply, the charge on the. After two time constants, everything has fallen by e2. Charging and discharging free download as powerpoint presentation. The insulator acts to increase the capacitor s charge capacity. Charging a capacitor means the accumulation of charge over the plates of the capacitor, where discharging is a completely opposite process. Charge and discharge of a capacitor capacitor discharging figure 3. Consider the capacitor is discharged initially and the switch is open. Capacitors have several uses, such as lters in dc power supplies and as energy storage banks for pulsed lasers. A revision video on charging and discharging capacitors and the exponential capacitor equations. When a capacitor is connected to a circuit with a dc supply two processes occur which are called as charging and discharging.
Charge an d discharge of a capacitor introduction capacitors1 are devices that can store electric charge and energy. The exponential the exponential voltage function, which is derived from equation 1, vt v 2 o e tis shown in figure 3. The voltage on a charging and discharging capacitor through a. Charging and discharging of capacitor a charged capacitor can then be discharged by draining the current through its two terminals or connecting some load through its terminals. The beauty of a diode lies in its voltagedependent nonlinear resistance. Capacitor charging when switch is closed at, beginning state capacitor voltage cannot change instantaneously when switching, the capacitor looks like a short circuit capacitor voltage begins at zero capacitor current instantaneously jumps to e r cc tsai 4 capacitor charging when switch is closed at, transient state. Pdf theory and experiment on charging and discharging a. Capacitors are characterized by their capacitance, c, defined as the ratio of the charge stored in the capacitor, q, and the potential difference between its plates, v. Charging and discharging of a capacitor lab report. Consider two different circuits containing both a resistor r and a capacitor c. After one time constant, the voltage, charge, and current have all decreased by a factor of e. It has a slope rate of change which is proportional to the value of the function v no matter where you are on the curve. Consider a circuit consisting of resistor r ohms, capacitor c farads, a voltage source v voltage and a switch as shown below. Charging and discharging capacitor battery electricity.
Pdf the beauty of a diode lies in its voltagedependent nonlinear resistance. Charging and discharging of capacitor in rc circuits. Chapter 11 capacitors charging, discharging, simple. The canonical charging and discharging rc circuits. The potential difference which drives currents thus. When the capacitor is connected to a battery current will flow and the charge on the capacitor. Phys 2426 engineering physics ii experiment 5 capacitor.
1389 333 1445 1450 784 1443 276 1449 1442 870 210 543 1251 1272 96 427 38 1336 229 1302 592 248 780 143 337 327 335 119 1396 147 688 37 1333 1009 115 1505 575 1089 301 994 1480 1058 542 178