H Exp – Electricity and Electronics 05 – The Balanced Wheatstone bridge

Aim – To find the resistances of unknown resistors.

Instructions

▪ Select resistor A to be the unknown resistor
▪ Click on a yellow connector, to select a resistor on the resistance board.
▪ Find the value of the resistance of the resistance board which balances the Wheatstone Bridge and find the value of resistance A
▪ Repeat to find the value of resistance B and C
▪ Replace R2 with a 10 kΩ resistor
▪ Predict the value of the resistance board that will balance the Wheatstone Bridge for each of the resistors A, B and C with this value of R2.
▪ Confirm your predictions

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