A sliding rheostat is a type of variable resistor used to control current in a circuit by altering the effective length of a resistive wire coil. It features a sliding contact (wiper) that moves along a porcelain cylinder wound with nichrome wire, allowing for smooth, manual adjustments to resistance. It is commonly used for educational experiments, dimming lights, or controlling motor speeds.

Rheostat

Variable Resistor for Physics & Electrical Labs

Product Specifications

• Product Name: Rheostat (Sliding Type)
• Function: Variable resistor for current control
• Resistance Range: Common ranges: 0–50Ω, 0–100Ω, 0–200Ω, 0–500Ω, 0–1750Ω
• Current Rating: Typically up to 2A or 5A (depending on model)
• Material: High-resistance wire wound on Plastic core
• Adjustment Type: Sliding contact (for sliding rheostat)
• Terminals: Plastic binding posts for secure connections
• Base: Durable metal or plastic frame with mounting feet
• Origin: Pakistan

Applications

• Used in physics labs to vary current in an electric circuit
• Ideal for Ohm’s Law and resistance experiments
• Common in school and college science practical
• Also suitable for electrical training centers and DIY projects

Safety & Handling

• Ensure connection matches rated current
• Do not operate with wet hands
• Keep away from flammable materials
• Avoid overloading to prevent coil heating
• Clean contacts occasionally for smooth operation