SNC1P
PHYSICS: PARALLEL CIRCUIT ANALYSIS
ASG#4
Purpose:
To measure electric currents, and potential differences in a parallel circuits using the PhET DC Kit.
Method:
1. Use the data table given to record your findings.
2. Open the PhET Circuit Construction Kit (DC only).
(Hint: do a google search for “phet dc only”)
3. Construct a simple parallel circuit using 1 battery
and 3 light bulbs (see figure 1).
4. Right-click on the battery and change its voltage
to 30 V. Right-click on the bulbs and change
their resistances to 10 S each (if they are not 10
S already).
5. Use the voltmeter and non-contact ammeter
(under “Tools”) to measure and record the
potential differences (V) and currents (A) at the
points indicated in the diagrams (see figures 2
and 3).
6. Remove the bulb and connecting wires A4.
Repeat step 5.
Three Bulbs
Two Bulbs
A1
A
A
A2
A
A
A3
A
A
A4
A
A5
A
A
V1
V
V
V2
V
V
V3
V
V
V4
V
Figure 1
Figure 2
Analysis (Answer the following in the space provided.)
1.
What conclusion can you make about the electric current in a parallel circuit?
2.
What conclusion can you make about the potential difference (i.e. voltage) in a parallel circuit?
SNC1P
Figure 3
PHYSICS: PARALLEL CIRCUIT ANALYSIS
ASG#4
Purpose:
To measure electric currents, and potential differences in a parallel circuits using the PhET DC Kit.
Method:
1. Use the data table given to record your findings.
2. Open the PhET Circuit Construction Kit (DC only).
(Hint: do a google search for “phet dc only”)
3. Construct a simple parallel circuit using 1 battery
and 3 light bulbs (see figure 1).
4. Right-click on the battery and change its voltage
to 30 V. Right-click on the bulbs and change
their resistances to 10 S each (if they are not 10
S already).
5. Use the voltmeter and non-contact ammeter
(under “Tools”) to measure and record the
potential differences (V) and currents (A) at the
points indicated in the diagrams (see figures 2
and 3).
6. Remove the bulb and connecting wires A4.
Repeat step 5.
Three Bulbs
Two Bulbs
A1
A
A
A2
A
A
A3
A
A
A4
A
A5
A
A
V1
V
V
V2
V
V
V3
V
V
V4
V
Figure 1
Figure 2
Analysis (Answer the following in the space provided.)
1.
What conclusion can you make about the electric current in a parallel circuit?
2.
What conclusion can you make about the potential difference (i.e. voltage) in a parallel circuit?
Figure 3