R-C Time constant
AIM- To study R-C Time constant capacitor.
APPARATUS- D.C power supply/ resistor, capacitor, and volt meter etc.
INTRODUCTION- A capacitor essentially consist of conduction surface separated by a largfe insulating medium called dielectric/ the purpose of capacitor is to store electrical energy by elecro static stress in the dielectric.
If a capacitor see is charge to high resistance from a battery of b volt the voltage across c build up at the start that is when see is entire than a gradually decreases and finally drop/ to sero when the p.d across the capacitor plates losses equal to that of the battery.
The time constant T is that time required in the in surface p/d across see to increases from zero its final value T= R×c Second where R= obhm (Ώ) and c is farad the time constant can also be defined as the time during with the capacitor voltages rises to 0.632% or 63.2% of a final study value .
Procedure-
Switch on the power supply an symmentanously start stop watch .
Conclusion: -
APPARATUS- D.C power supply/ resistor, capacitor, and volt meter etc.
INTRODUCTION- A capacitor essentially consist of conduction surface separated by a largfe insulating medium called dielectric/ the purpose of capacitor is to store electrical energy by elecro static stress in the dielectric.
If a capacitor see is charge to high resistance from a battery of b volt the voltage across c build up at the start that is when see is entire than a gradually decreases and finally drop/ to sero when the p.d across the capacitor plates losses equal to that of the battery.
The time constant T is that time required in the in surface p/d across see to increases from zero its final value T= R×c Second where R= obhm (Ώ) and c is farad the time constant can also be defined as the time during with the capacitor voltages rises to 0.632% or 63.2% of a final study value .
Procedure-
- Charging of capacitor.
- Keep the toggle switch off.
- Adjust the power supply at 3v d.c
Switch on the power supply an symmentanously start stop watch .
- Note down the reading of voltmeter at every fivce second initially and lether at ten second that the capacitor be charges to 3v
- Plote the graph of capacitor voltage vis time.
- Discharging of capacitor
- Discount of power supply.
- Close the toggle switch to on start stop watch.
- Note dowan the reading of the voltmeter as previously till the capacitor discharges fully.
- Plote the graph of the capacitor voltage vis.
Conclusion: -
- Time constant of the capacitor is T = R×c
- The T of the percentage circuit = 33 second.