This video introduces and explains the Wheatstone Bridge Circuit for A Level Physics.

Not invented by Sir Wheatstone, this is an example of a 'bridging circuit' where a sensitive ammeter bridges two parallel parts of the circuit. It can be used to find the resistance of an unknown resistor as it acts like a potential divider. It does this using two known resistors and a variable resistor, which is adjusted until no current flows through the ammeter in the bridge. We need to understand Kirchhoff's Laws in order to fully understand the Wheatstone Bridge Circuit.

Thanks for watching,

Lewis

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