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

Answer: The resistance of a wire is inversely proportional to its area and directly proportional to its length. When the length is tripled then resistance will also become three times. If The wire is stretched 3 times the original length, the cross-section of the wire is cut to 1/3rd it’s the original cross-section.

What will happen if a wire of resistance R is stretched three times of its length find new 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.

What happens to the resistance of the wire when its length is stretched to twice its original length?

As the length of wire gets doubled, the cross-sectional area will become half of its previous value because volume of wire remains constant. Hence, we can see that the new resistance is four times the previous resistance.

When the length and cross sectional area of a replacement wire are both tripled what will be the value of the resistance as compared to the original wire?

Resistance becomes 3 times.

When wire is stretched and its diameter becomes 3 times then resistance will it become?

If a wire is stretched to make its length three times, its resistance will become.

Where is stretched to three times its length find the strain produced in the wire?

Answer: 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!

What happens to the resistivity and resistance of a wire when its length is doubled?

So, the new resistance, after doubling the length of the wire, becomes twice of the original resistance. Hence, if the length of a wire is doubled, then its resistance becomes doubled.

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.

What happens to the resistivity of the wire when 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.

When length of A metal wire is doubled and area or cross section is reduced to half then its resistance becomes?

On doubling the length of wire, the resistance would become 20 ohms. Resistance, R = (resistivity constant)x L/ where L is length of wire and a A is area of cross section. When the area is halved (other parameters being same), The resistance would be doubled. So the final resistance of the wire would be 40 Ohms.

When both the length and area of cross section of A wire are doubled then its resistance?

Initial length of the conductor l1=l Final length of the conductor l2=2l Initial cross-sectional area A1=A Final cross-sectional area A2=2A The resistance of conductors given by R=ρ1A∝1A As both the length and area are doubled Hence, there will be no change in the resistance of the conductor and so it will remain …

When a wire is stretched the length of wire becomes four times the ratio of resistance is?

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

What happens to the volume when a a wire is stretched?

A wire is cylindrical in shape. When it is stretched, its length increases but volume remains the same. That means the cross-sectional area must also change. Volume =πr 2L=A×L

Why resistance value of stretched wire is same as original?

Presume the stretched wire is folded on itself, and two ends of this folded length are used for resistance measurement. Now the two ends are at same distance as original unstreched length. Total volume of wire is same. This means cross section area effectively remains same. So resistance value remains same as original.

Why is the cross section of a stretched wire the same?

Presume the stretched wire is folded on itself, and two ends of this folded length are used for resistance measurement. Now the two ends are at same distance as original unstreched length. Total volume of wire is same. This means cross section area effectively remains same.

What happens to resistance when a wire is folded in half?

Now Length of wire is doubled but as you are saying it is folded into half, do we can assume that the length of wire is unchanged. But the area is still half of the area of the previous wire. So resistance gets doubled. You have folded the wire so the inductance effect will also increase. due to which the wire’s resistance will further increase.