LED Lamp Current Test & Ohm’s Law Verification Board | DIY Electronics Teaching Experiment Kit

$16.84 USD

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LED Lamp Current Test & Ohm’s Law Verification Board — DIY Electronics Teaching Experiment Kit

A hands-on electronics experiment board purpose-built for teaching and verifying Ohm’s Law (V = IR) through direct LED lamp current measurement. This board provides a structured, safe, and repeatable platform for students, hobbyists, and educators to observe the relationship between voltage, current, and resistance in real circuits — moving beyond theory into measurable, visible results. Connect a multimeter, vary the resistance, and watch Ohm’s Law come to life through LED brightness changes and current readings.

What Is Ohm’s Law and Why Verify It?

Ohm’s Law states that the current (I) flowing through a conductor is directly proportional to the voltage (V) across it and inversely proportional to its resistance (R): V = I × R. While the formula is simple, understanding it intuitively requires hands-on experimentation. This board provides:

A controlled circuit with measurable voltage and current test points
LED lamps as visual indicators of current flow — brighter = more current
Resistance variation to demonstrate the inverse relationship between R and I
Series and parallel circuit configurations to extend learning

Specifications

Type	Electronics Experiment / Teaching Module
Primary Experiment	Ohm’s Law verification (V = IR)
Secondary Experiments	LED current measurement, series/parallel circuit analysis
Indicators	LED lamps (visual current flow indicator)
Test Points	Voltage and current measurement terminals
Condition	New
Origin	Mainland China

Experiments You Can Perform

✅ Ohm’s Law verification — measure V and I at different resistance values, calculate R, confirm V = IR
✅ LED forward voltage measurement — determine the forward voltage drop of different LED colours
✅ Current limiting resistor calculation — understand why LEDs need series resistors and how to size them
✅ Series circuit analysis — observe how current is equal throughout a series circuit
✅ Parallel circuit analysis — observe how voltage is equal across parallel branches
✅ Power dissipation calculation — calculate P = V × I and observe heat generation in resistors

Who Is This For?

Electronics students — high school and university physics / electronics lab experiments
Makers and hobbyists — build intuition for circuit design before moving to complex projects
Teachers and educators — structured, repeatable demonstration board for classroom use
Arduino beginners — understand why resistors are needed before connecting LEDs to microcontrollers
STEM education programs — engaging, visual introduction to fundamental electronics principles

Key Features

✅ Visual LED indicators — LED brightness provides immediate visual feedback of current changes
✅ Dedicated test points — connect a multimeter to measure voltage and current directly
✅ Safe operating voltages — designed for low-voltage experimentation, safe for students
✅ Compact PCB design — clear component labelling for easy circuit tracing and understanding
✅ Reusable — durable construction for repeated classroom or lab use

Frequently Asked Questions

Q: What power supply do I need?
A: The board operates at standard low DC voltages (typically 3.3V–5V). A USB power bank, Arduino 5V output, or a regulated bench power supply is suitable.

Q: Do I need a multimeter?
A: A multimeter is strongly recommended to measure voltage and current at the test points — this is what makes the Ohm’s Law verification quantitative rather than just visual.

Q: Is this suitable for complete beginners?
A: Yes. The board is designed as an introductory experiment. Basic knowledge of what voltage, current, and resistance are is sufficient to get started.