Find the resistance of this graphite wire

Reference no: EM13562761

The graphite in a pencil has a resistivity of7.84×10−6 W×m.The graphite's diameter is 0.700 mm and its length is40.0 mm. (a) Find the resistance of this graphite "wire." (b)Find the diameter of a cylindrical copper wire of the same length(having resistivity 1.70×10−8 W×m) that would produce the same resistance.

Reference no: EM13562761

Questions Cloud

A gold brick is transported from earth to the moon : The mass of the brick will change but the weight of the brick will remainthe same. Both the mass and the weight of the brick will change.Both the mass and the weight of the brick will remain the same. The mass of the brick will remain the same but..

The drawing shows two situations in which charges : The drawing shows two situations in which charges are placed on the x and y axes. They areall located at the same distance of 2.5 cm from the origin O. Foreach of the situations in the drawing, determine the magnitude of the net electric field at the..

Pulley is attached to the ceiling : A pulley is attached to the ceiling (as shown in the figurebelow). Spring scale A is attached to the wall and a rope runshorizontally from it and over the pulley. The same rope is then attached to spring scale B

Electric potential at surface of conducting-spherical shell : The electric potential at the surface of a conducting,spherical shell of radius R is V > 0 relative to Earth ground.True or False? The magnitude of the electric potential at a distancer=2R from the center of the shell is V/2.

Find the resistance of this graphite wire : The graphite in a pencil has a resistivity of7.84×10−6 W×m.The graphite's diameter is 0.700 mm and its length is40.0 mm. (a) Find the resistance of this graphite "wire." (b)Find the diameter of a cylindrical copper wire of the same length(having resi..

Find the mass of the block : A 12-gram bullet is fired at 1600 m/sinto the wooden block of a ballistic pendulum, causing it to swingback, raising up 1.40 meters vertically. Find the mass of the block.

Resulting velocity of the aspireright after the collision : A Chevy van going 15mph rear-ends a950-kg Ford Aspire that is stopped at a light. (After the collisionthey are both going in the same direction). Assume the Aspiredriver didn’t have the brakes on and that there’s nofriction/air resistance

What is the force of friction acting on the crate : A crate of oranges weighing 194 Nrests on a flatbed truck 2.0 m from the back of the truck. The coefficients of friction between the crate and the bed areμs = 0.37 and μk =0.20. The truck drives on a straight, level highway at aconstant 8.1 m/s. Wh..

The potential equals-find the value of the other charge : The potential equals 7.52 V at the midpoint between two point charges that are 0.95 m apart. One of the charges is 1.10 10-9 C. Find the value of the other charge.

User Account

All Pages