A 46.0-g sample of a conducting material is all that is available. The resistivity of the material is measured to be 13 x 10-82 m, and the density is 7.51 g/cm³. The material is to be shaped into a solid cylindrigal wire that has a total resistance of 1.5 2. (a) What length of wire is required? m (b) What must be the diameter of the wire? mm

The resistivity of a 100 m long copper wire is 1.72 x 10-80m. If the cross sectional area of the wire is 6 x 10-6m2, what is its resistance? 0.30 30 30 300

Copper has 8.5×1028 electrons per cubic meter. How many electrons are there in a 50.0 cm length of 12-gauge copper wire (diameter 2.05 mm)? If a current of 2.10 A is flowing in the wire, what is the average drift speed of the electrons along the wire? (There are 6.24×1018 electrons in 1 coulomb of charge.)

In a physics project, you need a wire to electrically heat a cryostat. You decide to create one with materials you have lying around. You find a 29.0-g piece of copper. The resistivity of copper is 1.68 x 10-8 Ω.m, and its density is 8.9 g/cm3. You will need to use all of your copper to create a solid cylindrical wire that has a total resistance of 0.75 Ω.Determine how long your wire will be, and what its diameter will be.

A gold wire of 0.500 mm diameter has 8.50 × 1028 conduction electrons per cubic meter. If the drift speed is 4.30 μm/s, what is the current in the wire?

The graph below shows data for a wire that is 9 m long & has a cross-sectional area of 0.002 m². The wire is made from an unknown material. Determine the resistivity of the material and the power loss of the wire when the current is 100 A. VOLTAGE vs. CURRENT GRAPH V (V) 500 400 300 200 100 20 40 60 80 1 (A) 100 resistivity of wire = power loss (when I = 100 A) = ABACHER 2-m

How long is a tungsten wire if it has a diameter of 0.179 x 10-3m and a resistance of 2.63 k2? The resistivity of tungsten is 5.62 x 10-* 2-m. length of the wire:

QUESTION 1 Consider a carbon rod resistor that has a uniform cross-sectional area of 5.00 mm-. When a potential difference of 3.5 V is applied across the ends of the rod, the rod carries a current of 0.40 A. Find the rod's length (in cm) if its resistivity is p=3.5 x 10 5 Q. m.

An aluminum rod with a square cross section is 1.8 m long and 6.2 mm on edge. (a) What is the resistance between its ends? (b) What must be the diameter of a cylindrical copper rod of length 1.8 m if its resistance is to be the same as that of the aluminum rod? The resistivity of aluminum is 2.75 x 108 Q-m and the resistivity of copper is 1.69 x 108 Q:m. (a) Number i Units (b) Number i Units