Mutual Induction Model STEM Lab Manufacturer,Supplier and Exporter in India
Product Code : SCL-IMIC-12542
Unlock the foundational principle behind electrical transformers, wireless charging, and modern power grids with the professional-grade Mutual Induction Model STEM Lab designed and manufactured by Educational Instrument India. Specifically engineered for high school science labs, advanced physics academies, and engineering institutions, this working model offers a tangible, highly visual platform to explore the invisible laws of electromagnetism, electromagnetic induction, and magnetic flux linkage.
Instead of trying to visualize abstract vectors and changing fields on a flat blackboard, students can directly manipulate parameters, vary inputs, and measure resulting outputs in real time. Built using rugged, industrial-grade components, this model is an essential asset for any interactive physics curriculum focused on hands-on discovery.
Key Product Features
Dual-Coil Coaxial Architecture: Features completely independent Primary and Secondary coil blocks wound on heavy-duty, insulated spools for precise step-up and step-down voltage testing.
Removable Soft-Iron Core Insertion: Includes a high-permeability, laminated soft-iron core rod that can be inserted or withdrawn to demonstrate how magnetic materials concentrate flux lines and increase coupling efficiency.
Integrated Analog Galvanometer Interface: Outfitted with dedicated, color-coded terminal binding posts designed to hook up directly to sensitive galvanometers or digital oscilloscopes for immediate wave tracking.
Variable Frequency Compatibility: Engineered to safely handle both transient Direct Current (DC via pulse switches) and continuous Alternating Current (AC) configurations.
Product Specifications
|
Parameter |
Specification Details |
|
Brand |
Educational Instrument India |
|
Product Name |
Mutual Induction Model STEM Lab |
|
Primary Coil |
Approximately 200 to 400 turns of heavy, insulated copper magnet wire |
|
Secondary Coil |
Approximately 800 to 1200 turns of fine, insulated copper magnet wire |
|
Core Material |
High-permeability, removable laminated soft-iron rod |
|
Chassis & Base Support |
Heavy-duty, non-conductive, injection-molded ABS plastic base |
|
Electrical Interface |
4x Standard 4mm safety banana jack terminal binding posts (Color-Coded) |
|
Maximum Input Rating |
6V DC / 12V AC (Engineered specifically for low-voltage classroom safety) |
|
Target Curricula |
CBSE/ICSE Class 10 & 12 Physics (Electromagnetism), AP Physics C, IB Diploma Physics |
How to Use the Mutual Induction Model
The apparatus is optimized for step-by-step laboratory tracking. Connect the setup to a low-voltage laboratory power supply (or battery) and a sensitive center-zero galvanometer.
Step 1: Transient DC Pulse Demonstration (Faraday's Discovery)
Slide the smaller Primary Coil inside the larger Secondary Coil chamber so they rest coaxially.
Insert the soft-iron core completely down the center axis of the primary spool.
Wire a low-voltage DC battery snap and a manual push-button tap-key switch to the Primary Coil terminals.
Wire a sensitive center-zero analog galvanometer directly to the Secondary Coil terminals.
Press the Tap Key Switch: Watch the galvanometer needle deflect sharply to one side and instantly spring back to zero.
Release the Tap Key Switch: Watch the needle deflect forcefully in the opposite direction before returning to zero.
Observation: This proves that an electromotive force is induced only when the primary magnetic field is actively changing
Step 2: Evaluating Core Permeability
Keep the primary tap-key system connected. Completely pull out the soft-iron core rod, leaving an empty air core.
Press and release the tap-key switch while monitoring the galvanometer.
Observation: Notice that the deflection amplitude drops dramatically. This proves to students how a ferromagnetic iron core structurally concentrates the magnetic flux lines between the coils.
The induced voltage in the secondary coil is mathematically governed by the Mutual Inductance factor and the rate of change of current in the primary coil
Safety & Classroom Maintenance Note: Never leave a DC power source continuously switched ON while connected to the Primary Coil. Doing so will cause resistive heating ($I^2R$ losses) within the copper wraps without generating any continuing induction in the secondary side. Wipe terminals down occasionally with a dry contact cleaner.
Frequently Asked Questions (FAQs)
Q1: Why does the secondary needle only move when the primary switch is being clicked?
According to Faraday's Law, an electrical current is only induced in a conductor when it experiences a changing magnetic environment. When the primary switch is held down steadily, the magnetic field is completely stable and unchanging, meaning , resulting in zero induced current. Clicking the switch creates the necessary transient change.
Q2: How does this model relate to household utility transformers?
An industrial power transformer works on this exact mechanical principle. By running Alternating Current (AC) continuously through a primary coil, the magnetic field naturally changes direction and magnitude 50 to 60 times a second. This constant oscillation continuously induces AC voltage in the secondary coil without requiring any moving mechanical parts.
Q3: What happens if we change the ratio of turns between the two coils?
This model acts as a basic transformer. If you feed the input into the smaller coil and read the output from the larger coil , it behaves as a Step-Up Transformer, increasing output voltage. If you reverse the setup, it acts as a Step-Down Transformer.
Q4: Is this unit safe for students to operate by themselves?
Yes. The model by Educational Instrument India is built for low-voltage, low-current educational loops. It has no exposed high-voltage wiring, preventing hazardous shocks. Standard classroom safety protocols for basic electrical circuits are all that are required.
