This document describes an experiment conducted by students to verify Ohm's Law through data logging. The students measured the voltage and current in a circuit with a 11.2 ohm resistor using a PASPORT Interface. They recorded 10 voltage and current readings and calculated the slope, finding it to be close to the measured resistance. The experiment allowed them to experimentally confirm the relationship between voltage, current, and resistance described by Ohm's Law.

1. SSI 3013: Information and Communication
Technology in Science
Group members:
Nor Fadilah Bt Zakaria D20101037413
Nur Faralina Bt Asrab Ali D20101037415
Syazana Bt Ismail D20101037417
Title : Data Logging (Ohm’s Law)

2. ENGAGE
1) How energy is supply to a circuit ?
2) What are the differences in current flow between series and
parallel circuit?
3) What will happen to resistance if the circuit is wire in series
and parallel ?
4) In what way does the series circuit reduce the resistance?
5) How to build wire in parallel and series circuit?

3. Empower
Objectives
To experimentally verify Ohm’s Law through measurement
and to confirm findings by comparing measured values with
prediction.
Measuring Instrument
Voltage/Current Sensor
PASPORT Interface
Crocodile clips
11.2 ohm Resistor
Batteries (D Cells)

4. Procedure:
1. Connect the PASPORT Interface to the USB port of
the computer and plug the Voltage/Current Sensor
into the PASPORT Interface.
2. Construct a simple series circuit with the empty
battery holder, long bulb in socket, and
voltage/current sensor .
3. You are now ready to begin collecting data.
Data Collection Procedure:
1. Make sure you have good connections at each junction
in the circuit.
2. Place one D cell in the battery holder; the bulb should
light. If not, troubleshoot your circuit for a complete
conducting path.
3. Click Start and note the readings on the voltage and
current digits displays.
4. Record the voltage and current in the data table.

5. Result
Part 1 Resistance = 11.2 ± 0.1 Ω
DataStudio Slope: 10.8 ± 0.59 Ω
Measured Values
Voltage (Volts) Current (Amps)
0.352 0.031
0.364 0.032
0.374 0.034
0.394 0.034
0.403 0.038
0.439 0.04
0.451 0.041
0.475 0.042
0.509 0.046
0.548 0.049

6. Interface

7. Example Experiment

8. ENHANCE
Principles
Ohm’s Law can be written algebraically as V = IR , where
V represents the potential drop across the conductor
(measured in volts), I the current in the conductor
(measured in amperes), and R the resistance of the
conductor measured in units called “ohms” (symbolized
by Ω, upper- case Greek omega)

9. How voltage, current, and resistance relate
The current flowing through a resistor
at a constant temperature is directly
proportional to the voltage across the
resistor. So, if you double the
voltage, the current also doubles. This is
called Ohm's Law. The graph shows what
happens to the current and voltage when
a resistor follows Ohm's Law.
Relationship between current and voltage
when a resistor follows Ohm's Law

10. • Use in all electrical devices that need a
continuous flow of electric current to
function.
• Batteries and generators provide the
electricity and electrical circuits
provide the paths along which the
current flow.

11. • Flash light
• Christmas tree light bulb
• Train lighting
• Voltage divider
• Or any of electrical
appliances….

12. • Kitchen appliances such as electric mixer and
light dimmer switches operate by altering the
current at the load by increasing or decreasing
the resistance of the circuit.
• The effect of the resistance in the circuit
that affect the current.

13. MORAL VALUES FROM OHM’S LAW
1. We known how to use electricity properly
2. Become more creative and innovative person
3. More appreciate the Ohm’s Law
4. Ohms Law is the a foundation stone of electronics and
electricity. Without the Ohm’s law, there will be no
electricity at all.
5. Allows us to enjoy the uses of our appliances now such
as TV, refrigerator, Players, etc.

14. Advantages of Data Logging
1. Better learning outcomes
2. Presentation of data
3. Appreciation of modern technology
4. Increased level of interest among
students.
5. Data from the computer more accurate
and precise.