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What happens when resistance decreases to near zero?

Current approaches infinity, resulting in a dangerous short circuit.

Is this lab safe for beginners?

Yes, explore high-voltage electrical behavior safely in software without blown fuses or shocks.

Home/All Tools/Virtual Lab & Science/Ohm's Law & DC Electrical Circuit Lab

How to Use & Guide ↓

Ohm's Law & DC Electrical Circuit Lab

Virtual Lab & Science

Local In-Browser Memory

DC Voltage (V)12 V

Resistance (R)100 Ω

Current (I = V / R)

120.0 mA

0.1200 Amperes

Power (P = V • I)

1.440 W

Thermal dissipation

Bulb Filament Glow

Ohm's Law & DC Electrical Circuit Lab

Interactive

4.94•530K Users•100% Client-Side Privacy

Unlimited Free

Simulate DC circuits with Voltage and Resistance sliders to calculate Current (I = V/R), Power (P = VI), and filament glow.

Voltage & Resistance slidersCurrent in mA and AmpsThermal power dissipationDynamic filament glow

How to Use Ohm's Law & DC Electrical Circuit Lab

Follow these simple steps to process your files securely in browser memory.

1Step 1 of 3

Adjust Voltage (V) & Resistance (R) Sliders

Vary DC voltage from 0 to 24V and resistance from 1 to 1,000 Ohms.

Pro Tip: According to Ohm's Law, Current is directly proportional to Voltage and inversely proportional to Resistance.

2Step 2 of 3

Inspect Current (mA) & Power (Watts)

Watch Current (I = V/R) and dissipated Power (P = V²/R = I²R) calculate in real time.

Pro Tip: Exceeding resistor power ratings causes thermal resistor burnout in physical circuits.

3Step 3 of 3

Observe Dynamic Filament Glow

The virtual bulb filament glow brightens or dims in direct response to dissipated wattage.

Pro Tip: Doubling voltage quadruples power dissipation (P proportional to V²).

Who Is Ohm's Law & DC Electrical Circuit Lab Built For?

Designed for professionals seeking fast, private, and unlimited client-side execution.

Primary Target Audience

🎯Physics Students, Electrical Apprentices & Makers

Also Widely Used By

STEM EducatorsHardware Hackers

Typical Real-World Use Cases

Interactive Ohm's Law circuit simulation (V = I * R)
Current (I) in Amps/mA and Electrical Power (P = V * I) in Watts
Simulating lightbulb filament glow and resistor heating effects

Dual Meter Ammeter & Wattmeter

Simultaneous current in mA and power in Watts.

Dynamic Filament Glow

Visual feedback simulating real incandescence.

Interactive Triangle Formula

Master V, I, and R relationships intuitively.

Frequently Asked Questions about Ohm's Law & DC Electrical Circuit Lab

V = I * R (Voltage = Current * Resistance), and P = V * I = I² * R = V² / R (Power in Watts).

Top Search Queries for Ohm's Law & DC Electrical Circuit Lab:

ohms law virtual lab online interactivev ir calculator voltage resistance current powerelectrical circuit simulator dc ohms lawcalculate power watts from volts and ohmsphysics lab ohms law lightbulb simulator

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