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What is wheatstone bridge ? why …

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What is wheatstone bridge ? why the resistance of galvanometer is zero

    • Posted by Mahesh Bhandari 5 years, 4 months ago

    CBSE > Class 12 > Physics
    • 1 answers

    Yogita Ingle 5 years, 4 months ago

    Wheatstone bridge, also known as the resistance bridge, is used to calculate the unknown resistance by balancing two legs of the bridge circuit, of which one leg includes the component of unknown resistance. It was invented by Samuel Hunter Christie in the year 1833, which was later popularized by Sir Charles Wheatstone in 1843.

    The circuit is composed of two known resistors, one unknown resistor and one variable resistor connected in the form of a bridge. This bridge is very reliable as it gives accurate measurements.
     

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