EXPERIMENT No. 5 CAPACITORS

Exercise : First, calculate how much time it would take to charge up the capacitor. Then connect the curcuit as shown above. Measure the time taken by the capacitor to reach thr applied voltage on an oscilloscope.

curcuit 1 : 1 k Ω x 0.0001 x 5 = 0.5 ms

circuit 2 : 100 Ω x 0.0001 x 5 = 0.05 ms

curcuit 2

curcuit 3 : 470 Ω x 0.0001 x 5 = 0.235 ms

curcuit 3

 curcuit 4 : 1 k Ω x 0.00033 x 5 = 1.65 ms

curcuit 4

 How dose changes in the resistor affect the charging time?

The lower resistance the faster the capacitor charges in steps of 5 the first is rapid because the current is large but as the current decreases the charge builds up more slowly and the voltage increases more slowly.

How dose the changes in the capacitor affect charging time?

The higher the uf capacitor the longer it takes to charge.