Set VA at 20 volts. Insert a jumper wire between points A and B and observe the meter action. Remove the jumper from points A and B. Reverse the polarity of the voltmeter. Insert a jumper between points C and D and observe the meter action during discharge of the capacitor. mOBSERVATION Discharge time was approximately _____ seconds. The rate of discharge was (linear, nonlinear) ____________________. nCONCLUSION Did the capacitor take the same time to discharge through R as it did to charge? ________. At the end of the discharge time VC = ________ ; VR = ________ V. 4. Remove the jumper from points C and D. Change the DMM polarity from the original setup if it is not an “autopolarity’’-type meter. Change R to a 1-MΩ resistor. Repeat the sequence of steps 2 and 3. mOBSERVATION Charge time was approximately _________ seconds. Discharge time was _________ seconds. nCONCLUSION Increasing R increased the charge time because the charging current was limited to a smaller value. Thus, it took longer to obtain a given potential difference or ____________________ across the C.

Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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Set VA at 20 volts. Insert a jumper wire between points A and B and observe the meter action.

Remove the jumper from points A and B. Reverse the polarity of the voltmeter. Insert a jumper between
points C and D and observe the meter action during discharge of the capacitor.
mOBSERVATION Discharge time was approximately _____ seconds.

The rate of discharge was (linear,
nonlinear) ____________________.
nCONCLUSION Did the capacitor take the same time to discharge through R as it did to charge?
________. At the end of the discharge time VC = ________ ; VR = ________ V.


4. Remove the jumper from points C and D. Change the DMM polarity from the original setup if it is not
an “autopolarity’’-type meter. Change R to a 1-MΩ resistor. Repeat the sequence of steps 2 and 3.
mOBSERVATION Charge time was approximately _________ seconds. Discharge time was _________
seconds.
nCONCLUSION Increasing R increased the charge time because the charging current was limited to
a smaller value. Thus, it took longer to obtain a given potential difference or
____________________ across the C.

.01µF
VA (dc)
R
V
100k 2
В
A
FIGURE 47-1
RPOSE To demonstrate the charging and dischargir
nd to observe that a capacitor takes five RC time const
et voltage level to another.
DMM
Resisto:
VVPS (dc)
10 kQ
CIS
100 k2
О Сарасitors
0.1 µF, 1.0 µF
1 ΜΩ
S Remember that charged capacitors remain charged
hey are discharged).
rcuit as shown in Figure 47-1.
sert a jumper wire between points A and B and observe
urrent flowed for approximately
second:
easured across R. The rate of charge was (linear, nonli
he current that flowed was the charging current tha
oltage equal to (VR, V¼)
Was c
of the ohorge time
oor the ond2
Transcribed Image Text:.01µF VA (dc) R V 100k 2 В A FIGURE 47-1 RPOSE To demonstrate the charging and dischargir nd to observe that a capacitor takes five RC time const et voltage level to another. DMM Resisto: VVPS (dc) 10 kQ CIS 100 k2 О Сарасitors 0.1 µF, 1.0 µF 1 ΜΩ S Remember that charged capacitors remain charged hey are discharged). rcuit as shown in Figure 47-1. sert a jumper wire between points A and B and observe urrent flowed for approximately second: easured across R. The rate of charge was (linear, nonli he current that flowed was the charging current tha oltage equal to (VR, V¼) Was c of the ohorge time oor the ond2
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