The Variable Resistor Wall Chart

The The Variable Resistor Wall Chart is a detailed educational resource that introduces learners to the function and application of variable resistors in electrical and electronic circuits. Designed to support CAPS-aligned Physical Sciences, Electrical Technology, Engineering Graphics and Design, Technical Sciences and STEM education, this wall chart explains how variable resistors are used to adjust circuit resistance and control current flow. Through clear diagrams, mathematical examples and a practical investigation, learners develop both theoretical understanding and practical skills. This educational poster is an excellent visual aid for classrooms, laboratories, workshops and independent study.

The chart begins with a variable resistor setup diagram, illustrating how the component is connected within a circuit. A "What we know already" section explains that resistors regulate the flow of current and that a variable resistor provides another method of adjusting circuit resistance beyond fixed series and parallel resistor combinations. It clearly describes how changing the resistance wire inside the device allows more or less current to flow, helping learners understand how resistance can be adjusted to meet the requirements of different electrical circuits.

A detailed worked example demonstrates how a variable resistor interacts with both series and parallel resistor networks. Learners are guided through the calculations needed to determine the total circuit resistance by combining the resistance of the variable resistor with equivalent resistance calculations for parallel resistors. Each mathematical step is clearly presented, reinforcing the formulas and problem-solving techniques required for electrical circuit calculations.

The wall chart also includes a complete laboratory experiment featuring the aim, hypothesis, method, results table and conclusion. Learners investigate how adjusting the variable resistor changes the measured resistance using a multimeter, comparing readings taken at different settings from fully clockwise to fully anticlockwise. This practical investigation develops measurement skills while demonstrating how variable resistors are used to fine tune electrical circuits. This informative poster is ideal for science laboratories, engineering workshops, technical classrooms and study spaces where learners need a reliable reference for circuit analysis, electrical measurements and resistor applications.

Key Benefits and Features

• Material: Printed on high-quality 250 gsm art board.
• Finish: Standard double-sided gloss lamination (75–125 microns) for superior strength.
• Dimensions: Standard size is 76 cm x 52 cm, with custom sizing available upon request.

Design

• Vibrant Printing: High-definition full-colour print on the front face.
• Subject Authority: Content is developed alongside subject specialists and respected educational institutions.
• Readability: Designed with a focus on clarity, making them easy to read from a distance. 

Specification:

• Size: 76 cm x 52 cm
• Material: 250 gsm art board with standard poster lamination

Please note the posters are backordered. When ordering this item it will be sourced from the publisher.

Please allow for an additional 3-4 days on orders containing posters.