What will be the new resistance of a wire if it is stretched to three times of its original length?

9 times
The length while cutting the cross-section by 3x, the new resistance will be 9 times the original resistance.

How does the resistance of a conductor vary if conductor is stretched to four times of its length?

How does the reisitance of a conductor vary if (a) conductor is stretched to 4 times of it’s length (b) Temperature of a conductor is increased. Electric (R ) : The resistance offered by a flow of electrons in a conductor is called electric resistance. If temperature increases, resistance also increases.

What is effect of stretching in resistance of a wire?

As a wire gets longer its resistance increases, and as it gets thinner its resistance also increases because its cross sectional area decreases. Doubling the length will double the resistance, but the wire also must get thinner as it is stretched, because it will contain the same amount of metal in twice the length.

When length of a metal is increased 4 times without changing its area of cross section then its resistance become?

It remains constant for all values for a given material. Now comparing Equation 1 and 2 we get that, Resistance has become 4 times after modifications. Hence Resistance will become 4 times in the new condition, if the area is doubled and length is halved.

What happens to the resistance of a conductor when it is stretched to make it longer?

Its resistance will get higher, because it gets thinner and longer. If the wire is stretched to double its length then it’s resistivity increases. As given by the relation. Resistivity is directly proportional to length of wire.

What happens when a wire is stretched?

When the wire is stretched to double the length , the area of cross section gets reduced to half. So when the wire is stretched, the resistance multiplies by four times. Hope you understood.

What happens to the resistivity of a wire when it is stretched?

Answer: The Resistivity of the wire will not change with the change in length. Resistivity is a property of the wire, it doesn’t depend upon it’s length or cross-sectional area.

When a wire is stretched to double its length the longitudinal strain produced in it is?

Longitudinal Strain is ratio of change in length to original length. Wire is stretched to double it’s original length. Hence change in length = 2×L – L (where L is original length. ) Therefore change in length is L.

https://www.youtube.com/watch?v=EJf17eUuww4