What is the resistance of a 7.4-mm length of copper wire 1.7 mm in diameter? The resistivity of copper is 1.68×10−8Ω⋅m.

The resistivity of copper is 1.72E-8 Ω·m. We would like to use a copper wire to connect two devices that are 6.65 m apart and require the wire resistance to be no higher than 7.21E-3 Ω. What is the minimum cross section area of the copper wire that we should use (in m2)?

What is the resistance of 10.0 m of no. 18 copper wire (diameter 0.40 in)? (The resistivity of copper is 1.68 x 108 Q-m.) O 0.00021 Q O 0.0012 Q O 0.0021 Q O 0.00012 Q hp W. HA

A 2 m long gauge 14 copper wire (diameter 1.624 mm, resistivity 1.72 × 10-8 Ωm) replaces a similar 2 m long copper wire but of gauge 20 (diameter 0.812 mm). The resistance of the new wire is       then that of the original wire. 2 times smaller 4 times greater 4 times smaller  2 times greater

Resistance depends on the size and shape of a conductor. We expect a long wire to have higher resistance than a short one (everything else being the same) and a thicker wire to have a lower resistance than a thin one.  Resistance also depends on the intrinsic property of the conductor called the resistivity.  If the resistivity of a particular wire is 70.26x10-8 Ω ⋅ m, the wire is 44.47mm in length, and the radius of the diameter of the wire is 1.95m, what is the resistance of the wire in units of Ohms (Ω)?

A 19.5-g sample of nichrome with density 8.400 ✕ 103 kg/m3 is made into a wire 1.45 ✕ 103 m long. If the resistivity of nichrome is 1.000 ✕10−6 Ω · m, what is the resistance of this wire?

A particular wire has a resistivity of 3.3 x 10-8 · m and a cross-sectional area of 3.7 x 10-6 m². A length of this wire is to be used as a resistor that will develop 51 W of power when connected across a 20-V battery. What length of wire is required? km

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?

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