Answer the following :
(a) Why are the connections between the resistors in a meter bridge made of thick copper strips?
(b) Why is it generally preferred to obtain the balance point in the middle of the meter bridge wire?
( c) Which material is used for the meter bridge wire and why?

Why are the connecting resistors in a meter bridge made of thick copper strips ?

Why is it necessary to obtain the balance point in the middle of bridge wire ? Explain.

Using meter bridge, it is advised to obtain the null point in the middle of bridge wire. Why?

(i) In a metre bridge, the balance point is found to be at 39.5 cm from the end A, when the resistor Y is of 12.5 Omega . Determine the resistance of X. Made of thick copper strips? (ii). Determine the balance point of the bridge above if X and Y are interchanged. (iii). what happens if the galvanometer and cell are interchanged at the balance point of the bridge ? Would the galvanometer show any current?

If the wire in the experiment to determine the resistivity of a material using meter bridge is replaced by copper or hollow wire the balance point i.e. null point shifts to

In a meter bridge, the length of the wire is 100 cm. At what position will the balance point be obtained if the two resistances are in the ratio 1:3?