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

R’= 40ohm.

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.

What is the new resistance of the wire after stretching?

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.

What happens to resistance when length is doubled Class 10?

Doubling the length doubles the resistance.

What is new resistivity if length of conductor is doubled?

If the length of the conductor is doubled then the resistance would increase by 8 times. Since length becomes 2l and the cross-sectional area becomes 14th.

What is the resistance of a 10 ohm wire?

A wire has a resistance of 10 ohms. It is stretched to 3 times its original length. What will be the new resistance and new resistivity? – Quora A wire has a resistance of 10 ohms. It is stretched to 3 times its original length.

What is the resistance when a wire is stretched 3 times?

Thus, R2 = 9 *10= 90 Ohm. When the wire is stretchedto 3 times radius will be reduced by √3. Cross sectional area will be reduced 3 times. Resistance will increase proportionally for the same length. is. 30 ohms for same original length and resistance for the 3 times the length will be 90 ohms.

What is the resistance of a cross sectional wire?

Cross sectional area will be reduced 3 times. Resistance will increase proportionally for the same length. is. 30 ohms for same original length and resistance for the 3 times the length will be 90 ohms. Resistivity will become 3 times the resistance (90/10) and 3 times the length. ie 27.

How much more resistance does a thinner wire add to resistance?

You get 9 times more resistance you initially had, this makes sense as you bring the wire to a thinner cross-sectional area, the electrons have more material to go through. EDIT: Rho is the resistivity of the metal; L being the total length; and A being the cross-sectional area of the wire. Fixed a math mistake! Thanks, Brett!

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