Is it necessary to keep the length of the slide-bridge wire 1 meter ? Explian

Is it necessary to keep the length of a metre bridge wire one metre?

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

Why should the area of cross-section of the meter-bridge wire be uniform ? Explian

What is the principle of a slide wire (meter) bridge?

The cost of a piece of cable wire is Rs. 35/-, If the length of the piece of wire is 4 meters more and each meter costs, Rs. 1/- less, the cost would remain un-changed. What is the length of the wire ?

Assertion: A slide wire bridge is also called a metrebridge. Reason: It is because, the length of wire in a slide wire bridge is one metre.

Assertion: A slide wire bridge is also called a metrebridge. Reason: It is because, the length of wire in a slide wire bridge is one metre.

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?