# physics

posted by .

a piece of wire has a resistance of R , it is cut into three pieces of equal length,and the pieces are twisted together parallel to each other. what is the resistance of the resulting wire in terms of R

• physics -

nine

• physics -

R/3

• physics -

As we know that
R is cutted into 3 equal parts and they are parallel to each other
But we have to remember that we have resultant in terms of R
Thus
Rn=1/R1+1/R2+1/R3
As R1=R2=R3=R
Thus 1/R+1/R+1/R=1/Rn
1/Rn=3/R
Rn=R/3

## Similar Questions

1. ### physics

A 14.5 metal wire is cut into three equal pieces that are then connected side by side to form a new wire the length of which is equal to one-third the original length. What is the resistance of this new wire?
2. ### physics

A 14.5 metal wire is cut into three equal pieces that are then connected side by side to form a new wire the length of which is equal to one-third the original length. What is the resistance of this new wire?
3. ### algebra

a piece of wire that is 58cm long is cut into three pieces. the longest piece is 6cm shorter than the sum of the lengths of the other two pieces. five times the lengths of the shortest piece is 10cm less than the sum of the lengths …
4. ### Physics

A certain piece of wire has a resistance of 250 ohms. if the wire is cut in three pieces and the cross sectional area of each piece is halved, what is the resistance of each piece?
5. ### Physics resistance question

A piece of copper wire of resistance R is cut into 10 equal lengths. These parts are connected in parallel. How does the joint resistance of the parallel combination compare with the original resistance of the single wire?
6. ### physics

A wire of uniform thickness with a resistance of 27 ohm is cut into three equal pieces and are joint in parallel.find the resistance of the parallel combination.
7. ### Physics Resistance

A piece of wire of resistance, R and uniform cross sectional area, A is cut into four equal parts and bundled together to form a thicker wire. The resistance of the bundled wire is: A 16R B 1/4R C 4R D 1/16R It's either 16 or 1/16 …
8. ### Maths

A long wire of some length is cut into small pieces of 216cm leave a small piece of length of 89 cm if this part were cut into equal pieces each of 18cm the length of the leftover wire would be
9. ### Maths

A long wire of some length is cut into small pieces of 216 cm leave a small piece of length of 89 cm if this part were cut into equal pieces each of 18 cm the length of the leftover wire would be
10. ### math

A long wire of some length is cut into small pieces of 216 cm, leaves a small piece of length of 89 cm. if this part were cut into equal pieces each of 18 cm, the length of the of the leftover wire would be:

More Similar Questions