Code: 4697.00
The most effective way to introduce the concept of resistance
We have developed our Potentiometer Bridge specifically for the teaching laboratory. This apparatus allows to study the resistance easily and quickly and determine the value of an unknown resistance.
Specifiche
Size: 110x12x3 cm
Weight: 2.7 kg
COMPONENTI PRINCIPALI
LEGGI E PRINCIPI ESAMINATI
EXAMPLE OF USE: Investigating the principles of variable resistance
How to build a potentiometer
A metal wire of known linear resistance is connected between the two extremes of the scaled surface.
If tension is applied between A and B, the current flowing on the wire will depend on the resistance of the whole wire. If we now connect our circuit at point C, the resistance of the circuit will be less, and can be shown that it is directly proportional to the wire length. By simply using a voltmeter and applying Ohm’s Law, is possible to verify the linear increasing of the resistance with length.
Students using the Potentiometer Bridge
