PASCO EM-8622 BASIC ELECTRICITY - Manual (Page 28)

Basic Electricity 012-04367E
24
⑧
Replace the 100-µF capacitor with a 330-µF capacitor. Repeat step 7, recording the charging and
discharging times in Table 8.1. If a third value is available, include it in the data table, too.
⑨
Return to the original 100-µF capacitor, but put a 220-K
Ω
resistor in the circuit. Repeat step 7,
recording your data in Table 8.1. If a third resistor is provided, use it in the circuit, recording the
data.
➤ NOTE:
➀
What is the effect on charging and discharging times if the capacitance is increased? What
mathematical relationship exists between your times and the capacitance?
➁ What is the effect on charging and discharging times if the resistance of the circuit is increased?
What mathematical relationship exists between your times and the resistance?
➉
Return to the original 100-K
Ω
resistor, but use the 100-µF capacitor in series with the 330-µF
capacitor. Repeat step 7, recording your results in Table 8.2.
11 Now repeat step 7, but with the 100-µF and the 330-µF capacitors in parallel.
R = __________ C
1
= __________C
2
= __________
➤ NOTE: What is the effect on the total capacitance if capacitors are combined in series? What if
they are combined in parallel? (Refer to Table 8.2).
Trial Resistance Capacitance
1
2
3
4
5
6
7
8
t
C
t
D
Table 8.1
Table 8.2
Type of Circuit
Series
Parallel
t
C
t
D