Technical data

33
Series
Detecting an Open in a Series Circuit
Projec
• en an open develops in a series circuit.
• o prove that the applied voltage appears across the open portion of a series circuit.
ems eeded:
- Electronics Trainer - Digital multi-meter
- Jumper Wires - Resistors: 1k, 4.7k & 10k
ake sure power supply is off when connecting meters or changing circuit components.
Circuits
t Objective:
o provide experience with the change that occurs wh T
T
It N
M
Experiment
1. Connect the initial circuit as shown in Figure 13-1.
and 2. Adjust the V
A
to 15 volts. Measure and record the current
individual voltage drops.
I = _________
T
_________________
V
1
= _________________________
V
2
= _________________________
_________________
2
een
R
1
and R
3
. Measure and record
al voltage drops.
w in a series circuit, creating an open within the
___________.
.) continuity b.) discontinuity
__________.
b.) low
______ volts because, with zero current, the
crease, decrease) _____________________
(increase, decrease) ____________________
V
3
= _____ ___
. Simulate an open circuit by removing R and leave the circuit 3
open betw
and individu
the current
I
T
= __________________________
V
1
= _________________________
V
2
(across open) = _________________
V
3
= _________________________
Since there is only one path for current to flo
series circuit will cause ______________
a
The total resistance of the circuit then appears to be infinitely ____________
a.) high
The voltage drop across
R
1
and R
3
were ___
I x R must equal _________.
If any part of a series circuit opens, R
T
will (in
to _____________________ and I
T
will
mA
V
A
1k
4.7k
10k
R
1
+

R
2
R
3
Figure 13-1