Download Experiment 30: Computer Simulation

Experiment 30: Computer Simulation
OHM1.CIR
The tasks in this topic include the operating instructions.
Set the value of resistor R so that the current
measured by the ammeter is:
a) 1
b) 5A
c) 2OmA
To view the component’s value, click the component
with the right mouse button.
Close or move the data window.
Determine the resistance for a current of 1 A.
To confirm that you know how to solve this kind of
problem, change the component’s value,
double-click R, and enter another answer.
Activate the simulation by clicking the Run
button located at the top of circuit window.
Check the ammeter reading by clicking the
ammeter icon with the right mouse button.
OHM2.CIR
Set the value of the voltage source E
so that ammeter reading is:
(a) 2 A
(b) 10 A
(c) 50 mA
Determine E for a current of 2 A.
Check your solution by activating the
simulation with the Run button.
Double-click the row with component E
in the table. Type your value for
E in the properties window.
The current as measured by the ammeter
will be updated immediately in the table.
154
Experiment 30
CIRC4.CIR
Set resistor R3 so that the ammeter will read 1 A.
CIRC5.CIR
Set the values of resistors R1 and R2 so that the ammeter
will read 1 A when
a)
b)
c)
The resistors are identical.
The resistors are different.
R1 is three times R2.
Sample Circuit
Run
Comp.
Data
Ammeter
E
R1
R2
~
10.0V
3.0 Ohm
3.0 Ohm
In this task you can change the values of RI and R2 only.
Next Task
Main Menu
155
Experiment 30
CIRCC2.CIR
Set the value of the (ideal) voltage source E so that the current read by
the ammeter in each circuit is the same.
Resistors R1= R2=R3 in all three circuits, but their values are unknown
Circuit 1
Comp
Data
Ammeter
E
10.00 V
Circuit 2
Comp
Data
Ammeter
E
10.00 V
Next Task
Main Menu
CIRCC6.CIR__
(a) Connect all of the resistors so that the current
measured by the ammeter will be the maximum.
(b) In (a) all of the resistors are identical.
How will the solution change if
1) R1=R2 and R3 = two times R2?
2) R1 >> R2 and R3?
156
Circuit 3
Comp
Data
Ammeter
E
10.00 V
Experiment 30
METERS1.CIR
a) Connect the ammeter to measure the
current through bulb B.
b) Connect the voltmeter to measure the
potential difference across bulb B.
The components are fixed, but you can add or delete shorts if necessary. Compare your
meter readings to the values listed in the table. They should be identical.
SOURC1.CIR
Connect the three ideal batteries in series
so that the current through the resistor is
a. 4 A
b. 2 A
c. Zero
Comp
E1
E2
E3
R
Data
10.00 V
10.00 V
20.00 V
10.00 Ohm
Current (A)
0.00
0.00
0.00
0.00
Current in R
Comp
Current (A)
R
0.00 V
157
Experiment 30
SOURC3.CIR
The four nonideal emfs are identical (unknown emf and r)
a) Connect all emfs to form a battery and
construct a circuit in which the current
through R is a maximum.
b) Set the value of resistor R in the circuit
you have constructed so that the power
dissipated in R is the largest possible.
Change R and test your design.
Comp
R
Main Menu
Current and Power in the Resistor
Data
Current (A)
Power (W)
10.00 Ohm
0.00
0.00
REV4.CIR
Add resistor R to the circuit and set its value so that the voltmeter reads zero.
Comp
E
R
R1
R2
R3
R4
Data
7.00 V
1.00 Ohm
6.00 Ohm
3.00 Ohm
4.00 Ohm
4.00 Ohm
Voltmeter Reading
Comp
Data
Voltmeter
-
All components except R are fixed, but you can create and delete shorts.
Main Menu
Next Task
158
Experiment 30
REV5.CIR
Build a circuit in which the three resistors are connected in parallel.
Set R3 and the internal resistance of the source E so that the
current through R3 is 1 A and the current through R2 is 3 A.
Comp
E
R1
R2
R3
Main Menu
Next Task
159
Data and Current
Data
Current (A)
3.00 V, 1.00 Ohm
0.00
2.00 Ohm
0.00
3.00 Ohm
0.00
0.00 Ohm
0.00