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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Consider the potentiometer circuit as arranged in the figure (32−E29). The potentiometer wire is 600 cm long. (a) At what distance from the point A should the jockey touch the wire to get zero deflection in the galvanometer? (b) If the jockey touches the wire at a distance of 560 cm from A, what will be the current in the galvanometer?

Consider the potentiometer circuit as arranged in the figure (32−E29). The potentiometer wire is 600 cm long. (a) At what distance from the point A should the jockey touch the wire to get zero deflection in the galvanometer? (b) If the jockey touches the wire at a distance of 560 cm from A, what will be the current in the galvanometer?

A thin uniform wire AB of length 1 m an unknown resistance X and a resistance of 12Ω are connected by thick conducting strips consisting of two resistors X and Y together in parallel with a meter long constantan wire of uniform cross section. Which the help of a movable contact D Figure shows a meter bridge (which is nothing but a practical Wheatstone bridge) if one decides to balance a resistance of 4 X against Y In a meter bridge experiment null point is obtained at 20 cm. from one end of the wire when resistance X is balanced against another resistance Y. If XltY then where will be the new position of the null point from the same end