. A wire is stretched by a certain amount under a load. If the load and radius both are increased to four times, find the stretch caused in the wire

A wire stretches by a certain amount under a load. If the wire’s length and diameter are both doubled, the stretch caused by the same load is :

If a copper wire is stretched to make 0.1% longer, what is the P.C. change in its resistance?

. A wire is replaced by another wire of same length and material but of twice diameter. (/) What will be the effect on the increase in its length under a given load? (//) What will be the effect on the maximum load which it can bear?

A copper wire is stretched so as to increase its length by 0.2% . Calculate the percentage change in the resistance of the wire.

A wire suspended vertically from one end- stretched by attaching a weight 200 N to the lower end. The weight stretches the wire by 1 mm. The energy gained by the wire is :

. Two wires of the same radius and material have their lengths in the ratio 1 : 2. If these are stretched by the same force the strain produced in the two wires will be in the ratio

Two wires of same radius and legth are subjected to the same load . One wire is of steel an the other is of copper . If the young modulus of steel is twice that of copper find the ratio of elastic energy stored per unit volume in steel to that of copper .