Resistance Box 10000 Ohms
Product Code : SCL-PLE-11798
The JLab India 10,000Ω Resistance Box is a high-precision laboratory standard engineered for the empirical study of circuit impedance and the calibration of electrical measurement systems. This "Plug-type" or "Decade-dial" apparatus allows students to introduce specific, incremental resistance values into a circuit with high repeatability. It is optimized for University and Secondary-level physics experiments involving the Wheatstone Bridge, Potentiometer, and Ohm's Law verification.
Technical Specifications
| Tender Specification | OEM Technical Detail |
| Total Resistance | 10,000 Ω (Ohm) total capacity |
| Step Increments | Available in ranges (e.g., 1–10,000Ω or 10–10,000Ω) |
| Resistive Element | Non-inductively wound Constantan or Manganin wire coils |
| Accuracy / Tolerance | ±0.1% (Premium Class) to ±1% (Standard Class) |
| Contact Interface | Heavy-duty brass blocks with precision-ground tapered plugs |
| Internal Winding | Bifilar winding to eliminate self-inductance and capacitance |
| Chassis Construction | Polished seasoned Teakwood or high-impact phenolic resin case |
| Current Rating | Designed for low-current bridge circuits (typically max 100mA) |
Certification | ISO certificates available on request |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
- Impedance Interface: Facilitates student visualization of discrete resistance steps, supporting Electromagnetism Module 101 by providing a physical "switchable" load.
- Network Quantification: Enables the physical study of electrical components, allowing learners to apply known resistance values to determine the unknown EMF of a cell or the sensitivity of a galvanometer.
- Null-Point Analysis: Supports the analysis of bridge circuits; the box acts as the standard "Known Arm" in a Wheatstone Bridge, where students must evaluate the point at which the galvanometer shows zero deflection.
- Precision Evaluation: Allows students to evaluate the impact of contact resistance; by ensuring plugs are seated firmly, students learn the importance of minimizing parasitic resistance in high-precision data collection.
International Logistics & Compliance
JLab India ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade seaworthy crating (ISPM-15 compliant) featuring vacuum-sealed moisture barriers to protect the internal bifilar coils and brass blocks from oxidation during transit.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and a factory-verified calibration chart.
- Durability: Tropicalized design featuring anti-tarnish coatings on all brass surfaces and vacuum-seasoned wood, ensuring the box maintains its structural integrity and electrical accuracy in high-humidity climates.
Direct OEM Sourcing Advantages
Procuring the JLab India 10,000Ω Resistance Box directly ensures vertical manufacturing control:
- In-House Bifilar Winding: Every coil is wound using the non-inductive bifilar method, ensuring the box remains accurate for both DC and low-frequency AC experiments.
- Precision Plug Fitting: Direct oversight of the brass-block milling ensures that the tapered plugs fit with a high contact area, resulting in ultra-low "Zero Resistance" (typically <05Ω).
- Direct Factory Spares Availability: Guaranteed availability of replacement brass plugs, shorting links, and individual internal coil modules to maximize long-term laboratory ROI.
- Manufacturing Control: Direct oversight of the wood seasoning process prevents the top ebonite/polymer plate from warping, ensuring the brass blocks remain perfectly aligned for decades of use.