Ohm’s Law

Ohm’s Law

This animation demonstrates Ohm’s Law, the fundamental relationship between voltage (V), current (I), and resistance (R) in a DC circuit.

It shows how changing the supply voltage or resistance directly affects the current flowing through a resistor.

Ohm’s Law is the foundation of all electrical calculations in both basic and advanced circuits.

Key Components:

• Variable Power Supply: Provides adjustable DC voltage to the circuit.
• Resistor (100 Ω): Limits the flow of current and provides a fixed resistance value.
• Voltage Display: Shows the applied voltage across the resistor.
• Current Display (mA): Shows the current flowing through the resistor according to Ohm’s Law.

Working Principle:

Ohm’s Law states:

V = I * R

This means the current in a DC circuit depends on the voltage applied and the resistance present.

In the GIF:

• The supply voltage is 36 V
• The resistor value is 100 Ω
• The current shown is 360 mA

This matches Ohm’s Law:

I = V / R

I = 36 / 100

I = 0.36 A

I = 360 mA

The animation clearly shows how the voltage, resistance, and current displays adjust together to follow this exact relationship.

⚡ Tip:

If you increase voltage, current increases.

If you increase resistance, current decreases.

Always use the correct resistor to prevent overheating or excessive current flow.