When a wire is stretched 3 times what is the resistance?

When the wire is stretched to 3 times its original length, its cross section is also reduced to one third of what it was before. By using the above relation, we find the new resistance to be 3×3= 9 times of what it was before! Hope this helps.

When a wire of resistance 10 Ohm is stretched out to double of its original length The resistance of new wire will be?

So assuming it were possible to stretch a wire to double it’s length without crystallizing the metal to drastically alter its resistance or resistivity the resulting wire would be half as thick. Half as thick doubles resistance, twice as long doubles that resistance. So multiply 10x2x2=40.

What is the resistance when a wire has a resistance of 10 Ohm its length is now doubled and the cross sectional area is halved?

resistance of wire will be 40Ω.

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

Resistivity of a material does not change with dimensions. It depends on material and temperature. Hence, by stretching a wire, there will be no effect on its resistivity. It will remain same.

What is the new resistance of the wire?

Since as the case is mentioned in the question, the wire is stretched the volume is constant. Therefore, the length gets double and area reduces by half. Therefore, the resistance of new wire is = 10* 2*2 = 40 Ohms.

What do you understand by the statement that the resistance of a given wire is 10 ohm?

the resistance of a conductor is said to be 1ohm if a current of 1ampere flows through it when the potential difference across its end is 1volt. hope its helpful!

What happens to the resistance and resistivity of a wire in the following cases?

In case 1, resistivity is constant and resistance is half. In case 2, resistance is constant and resistivity is half.

What happens to the resistance and resistivity of A wire in the following cases A wire is cut into two equal halves B wire is stretched to double its length?

The resistance of the wire is equal to the product of resistivity of the material and length of the wire divided by the area of cross section. The volume of both wire is same. Hence, The new resistivity of the material of the wire is .