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Explain how will we use a …

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Explain how will we use a metre bridge to find the resistance of a given resistor wire

    • Posted by Mosmi Singha 8 years ago

    CBSE > Class 12 > Physics
    • 1 answers

    Vineit Kumar Gupta 8 years ago

    Metre bridge works on the principle of Wheatstone bridge . It simple we balance the resistances as in Wheatstone bridge and then we find null point . As at null point no current is drawn its very accurate. We comapare the resistance by a value which we know. Like i a have conected a wire and a resistor of 2 ohm and the null point comes out to be 50 cm then Wire /50 =2/50 Or the resistance of given wire is 2ohms We use this formula R/(100-l) = known resistance / l Hope it will help you ☺

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