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.

Q: A circuit calls for a 0.280 mm diameter copper wire to be stretched between two points. You don't…

A:

Q: You are working at a company that manufactures electrical wire. Gold is the most ductile of all…

A: resistance, R=ρlA where, ρ=resistivity of gold=2.44×10-8Ωm l=length of the wire A=surface area of…

Q: 15. A 2.50-m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a…

A: Solution:  Voltage across the rod, V = 18.0 V  Length of the rod, L = 2.50 m = 250 cm  Diameter, d…

Q: Charges can move across the cell membrane, so it is not a perfect insulator; the cell membrane has a…

A:

Q: What is the resistance of a wire made of a -8 material with a resistivity of 32x10 Q.m if its length…

A:

Q: If you accidentally touch the "hot" wire connected to the 120 VV line, how much current will pass…

A: Given  Resistance R = 1.9  kohm = 1.9 x 103 ohm = 1900 0hm  applied potential difference V = 120 V

Q: A conductor has a cross- sectional area of 2.3x106 m2 and the number of free electrons per unit…

A:

Q: A carbon resistor is to be used as a thermometer. On a winter day when the temperature is 32°F, its…

A: Given Initial resistance R0 = 220 ohm Final resistance R = 214 ohm Initial temperature To = 32oF…

Q: Resistance depends on the size and shape of a conductor. We expect a long wire to have higher…

A: Ans:- Image-1

Q: What is the resistance (in units of Q) of a wire made of a material with a resistivity of 3.2 x 10-8…

A: It is given that ρ=3.2×10-8 Ω.ml=46.5 md=0.5 mm=0.5×10-3 m

Q: Two conductors are made of the same material and have the same length. Conductor A is a solid wire…

A:

Q: Wire C and wire D are made from different materials and have length LC = LD = 4.3 m. The resistivity…

A: Since you have posted questions with multiple sub-parts, we will solve the first three for you. To…

Q: The average bulk resistivity of the human body (apart from surface resistance of the skin) is about…

A:

Q: a. Of what material is a wire made, if it is 10 m long with a diameter of 0.25 mm and has a…

A:

Q: Nerve impulses are carried along axons, the elongated fibers that transmit neural signals. We can…

A: Given Diameter  = 10 μm Specific resistance ρ = 0.5 ohm. meter Length l = 7 mm To Find out…

Q: At the left end. the resistivity is 2.25*10-8 Ω.m and the right side is 4.50*10-8m. (a) What is the…

A:

Q: A solid cube of silver has a mass of 90 g. The density and resistivity of silver are 10.5 g/cm³ and…

A: The objective of the question is to find the resistance between opposite faces of a solid cube of…

Q: The resistivity of a 1.0 m long wire is 1.72 x 10-8pm and its cross sectional area is 2.0 X 10-6m2.…

A:

Q: copper wire is r = 2.19 cm in radius and 2.6 m in length, has a resistivity of 1.72x10^-8 Ω m, and…

A: Given: The radius of the wire is 2.19 cm. The length of the wire is 2.6 m. The resistivity of the…

Q: A piece of wire has resistance of 1.25 2. The wire is made of a material with resistivity 8.2x10-7…

A:

Q: 15. A 2.50-m cylindrical rod of diameter 0.500 cm is connected to a power supply that maintains a…

A:

Q: A) A long wire with a radius of 0.450 cm carries a current. The potential difference across a 3.60 m…

A: Current in the circuit = Potential difference/ Resistance of wire. Using relation between resistance…

Q: A copper wire is having a length of 8m and a radius of 32mm. The resistivity (p) of copper is…

A:

Q: A long wire with a radius of 0.400 cm carries a current. The potential difference across a 3.60 m…

A:

Q: A copper wire has radius r = 0.314 cm, is 6.00 m long, has resistivity p = 1.72-10-82 m, and carries…

A:

Q: A copper wire has a cross-sectional area of 3.31× 10-6m². It carries a constant current of 10.0 A.…

A: Given value--- Area = 3.31 × 10-6 m2 . Current = 10 Amp. density of copper = 8.92 g/cm3 . molar…

Q: 1.70 mm cylindrical rod of diameter 0.550 cm is connected to a power supply that maintains a…

A:

Q: Q7/ A cube of a material of side 1 cm, has a resistance of 0.012 between its opposite faces. If the…

A: Side of the cube , s = 1 c m Resistance , R = 0.01 Ω Length , L = 8 cm To find = resistance of the…

Q: An aluminum wire with a circular cross-section has a mass of 1.45 g and a resistance of 0.630 Ω. At…

A: Resistance of wire of area of cross section A and length l is given as R= ρl/A.

Q: What current flows through a 2.15 cm diameter rod of pure silicon that is 20.5 cm long, when 1000 V…

A:

Q: Wire Cand wire D are made from different materials and have length Lc = LD = 2.6 m. The resistivity…

A: Concepts: The resistance of a wire of length L and cross-section A is given by,         R=ρLA…

Q: esistance depends on the size and shape of a conductor. We expect a long wire to have higher…

A: Given: ρ=12.08*10-8 Ωl = 14.22 mr = 1.33 m

Q: A copper wire with a circular cross-section has a mass of 1.20 g and a resistance of 0.590 2. At…

A: Given: Mass of wire is m=1.20 g Resistance of wire is R=0.590 Ω At temperature T=20°C, resistivity…

Q: The filament in an incandescent light bulb is made from tungsten (resistivity 5.6 x 10 Q-m). The…

A:

Q: Two wires with the same resistance have the same diameter but different lengths. If wire 1 has…

A: Given Information:- Resistance and diameter of the two wires are same. Resistivity of copper is…

Q: 10-gauge copper wire (diameter = 2.588 mm, ρ = 1.7 × 10–8 Ω · m) has a total resistance of 0.32 Ω.…

A:

Q: A conductor has a free charge density of 1029 electrons per cubic meter, and the resistivity of p =…

A: Given Data: Free charge density (n) = 1029/m3.Resistivity (ρ) = 2.0×10-8 Ω.m.Drift velocity (vd) =…

Q: An electrical conductor designed to carry large currents has a circular cross section 2.40 mm in…

A: Given: The diameter of the wire is 2.40 mm or 2.40×10-3 m.           The length of the wire is 14.8…

Q: A wire has a resistance of 2.50 Ω, a radius of 4.20 mm and a length of 4.00 m and we want to find…

A: Write the expression for the resistivity

Q: You are working at a company that manufactures electrical wire. Gold is the most ductile of all…

A:

Q: The rod in figure P27.24 is made of two materials. The figure is not drawn to scale. Each conductor…

A:

Q: Gold is the most ductile of all metals. For example, one gram of gold can be drawn into a wire 2.35…

A:

Q: A conductor bar (0=5.8*107 S/m) of square cross section (DxD) has a circular bored along its length…

A: Answer              C. 38678.82

Q: The lengths of two conductor wires made of different materials are L1-2L2 and The resistors are…

A: The relation between resistance and resistivity is given byR = r×LA where R is resistancer is…

Q: What is the resistance ?R of a 43.9-43.9-m-long aluminum wire that has a diameter of 9.59 mm?9.59…

A: Resistance of aluminum wire= ?