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Question

on what principle does a slide wire bridge work?

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Solution

Answer:
Working principle of slide wire bridge is principle of wheatstone bridge.

Explanation of wheatstone bridge principle:
  • Wheatstone bridge consists of 4 resistors which are arranged in the form of quadrilateral.
  • When the bridge is balanced, the ratio of resistors on one side is equal to the ratio of resistors on other side. In this case the current through the diagonal is equal to zero.
  • P/Q = R/S, where P, Q are resistances on one side and R,S are resistances on the other side.

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