Question

How will the resistance & resistivity of a given wire change if (give reason to justify

your answer):

(i) the current through it is doubled

_________________________

(ii) the voltage across it is doubled.

__________________________

(iii) the wire is cut into three parts.

__________________________

(iv) the radius of the wire is doubled.

__________________________

(v) the area of cross section is halved.

__________________________

What will be the affect on in all the above

cases?​

Answer 1

Answer:

iv the radius of the wire is doubled