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Why are connecting resistors in a metreb...

Why are connecting resistors in a metrebridge made of thick copper strips ?

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Thich copper strips offer minimum resistance and hence avoid the error due to end resistance. Which have not been taken into account in the bridge formula.
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(a) In a meter bridge the balance point is found to be at 39.5cm from the end A. when the resistor S is of 12.5Omega. Determine the resistance of R. Way are the connections between resistors in a Wheatstone or meter bridge made of thick copper strips ? (b) Determine the balance point of the bridge above if R and S are interchanged. (c ) What happens if the galvanometer and cell are interchanged at the balance point of the bridge ? Would the galvanometer show any current ?

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