⚡ PHYSICS VIRTUAL LAB #2

Ohm’s Law Circuit Lab

Build a virtual electrical circuit, change voltage and resistance, observe current flow and verify Ohm’s Law experimentally.

🎯 Aim Verify Ohm’s Law

🔋 Voltage 1–12 Volts

〰️ Resistance 10–100 Ohms

⚡ Current Calculated automatically

🔌 Interactive Circuit

🔋

6 V Battery

0.00 A

R = 50 Ω

V 0.0 V

SWITCH

Electric Current 0.000 A

🎛 Experiment Controls

Battery Voltage 6 V

Resistance 50 Ω

Voltmeter 0.0 V

Ammeter 0.000 A

Ohm’s Law

V = I × R

I = V ÷ R

🎯 Aim of Experiment

To verify Ohm’s Law by studying the relationship between potential difference, electric current and resistance in a simple electrical circuit.

🧠 Theory

Ohm’s Law states that, under constant physical conditions, the current flowing through a conductor is directly proportional to the potential difference across it.

V = I × R

V = Potential Difference in volts (V)
I = Electric Current in amperes (A)
R = Resistance in ohms (Ω)

💡 If resistance remains constant, increasing voltage causes current to increase proportionally.

📊 Observation Table

Switch the circuit ON, change the voltage or resistance and record your readings.

Trial	V	R	I	V/I
No observations recorded.

📈 Live V–I Observation Graph

Recorded readings appear below. For a fixed resistance, voltage and current should show a linear relationship.

Voltage (V)

Current (A)

🧪 Procedure

Set the battery voltage.
Select the resistance.
Press Switch ON.
Observe the ammeter and voltmeter.
Record the reading.
Change voltage and take another reading.
Compare V/I for your observations.

🔎 What Should You Observe?

For a fixed resistance, increasing the voltage increases the current.

For a fixed voltage, increasing resistance decreases the current.

✅ Expected Result

The experiment verifies the relationship:

V ∝ I and V / I = R

When the resistance remains constant, the ratio of voltage to current remains approximately constant. This is the resistance of the conductor.