MS-494 PVG RESISTANCE BOX 210 OHMS

A resistance box is a passive electrical instrument that provides known, adjustable values of electrical resistance. Contains precision wire-wound coils made of constantan or manganin, connected in series, allowing users to add or select specific resistance levels using brass plugs or rotary dials for testing and calibration.

• High-quality, precision tool used for accurately measure and adjust resistance in electrical circuits.
• Compact design and easy-to-use.
• All the plugs are interchangeablei.e with fine standard taper
• These are moulded in fluted plastic tops. The brass blocks are undercut and are fitted to a thick insulating plate.
• 4 mm brass terminals are used for connection.
• Good Quality ,non-inductively wound Coils .
• Plate engraved with Coil values
• Accuracy ±0.5% for 0.01 to 0.05 ohm coils, ±1% for the remaining,

Working of Resistance Box
• Path of Least Resistance: Electricity flows through the easiest path available.
• Plug Type: Brass plugs sit tightly between brass blocks. Inserting a plug creates a short-cut that bypasses the hidden resistor coil beneath it. Removing the plug forces the current to travel through that specific resistor coil, adding its value to the total resistance.

Common Uses
• Physics Labs: Used in Ohm’s law verifications, Wheatstone bridges, and potentiometer experiments.
• Calibration: Employed to test and verify the accuracy of multimeters, ohmmeters, and other measuring devices.
• Circuit Design: Helpful for prototyping and fine-tuning electronic components where an exact unknown or adjustable resistance is needed.