A composite conductor 10 [m] long consists of an inner core of steel with radius 1.5 [cm] and an outer sheath of copper whose thickness of 0.5 [cm]. Take the resistivities of copper and steel as 1.77 x 10-8 [22-m] and 11.8 x 10-8[m], respectively. Determine: b) The resistance of a solid copper conductor of the same length and cross sectional area as the sheath.

A copper wire of radius a = 0.334 mm has an aluminum jacket of outer radius b = 0.465 mm. There is a current i = 2.34 A in the composite wire. Take the resistivity for copper and aluminum to be 1.69 × 10‍802•m and 2.75 × 10-Q.m. Calculate the current in (a) the copper and (b) the aluminum. (c) If a potential difference V = 17.0 V between the ends maintains the current, what is the length in meters of the composite wire? (a) Number i (b) Number Units Units (c) Number Units

Suppose you wish to fabricate a uniform wire from 2.50 g of copper. The wire is to have a resistance of R = 0.360 2 and all the copper is to be used. %3D (a) What must be the length of this wire? (b) What must be the diameter of this wire? pm

A copper wire of radius a = 0.240 mm has an aluminum jacket of outer radius b = 0.329 mm. There is a current i = 1.57 A in the composite wire. Take the resistivity for copper and aluminum to be 1.69 × 10-8Ω·m and 2.75 × 10-8Ω·m. Calculate the current in (a) the copper and (b) the aluminum. (c) If a potential difference V = 13.1 V between the ends maintains the current, what is the length in meters of the composite wire?

As part of a class project you are given 0.900 g of copper and asked to fabricate a wire with uniform cross-section. You use up 95% of the copper and make a wire with a resistance of 0.723 Ω. The resistivity of copper is 1.72  10-8 Ω · m and its density is 8.92  103 kg/m3. (a) What length of wire do you end up with? (m)(b) What is the diameter of the wire? (mm)

Part (a) I measure the resistance of this wire and find it to be R = 156 Q. What is the resistivity of the material the wire is made out of? p= Problem 7: A particular wire has a length of L = 2.7 m and a circular cross-sectional area of radius r= 1.69 mm. G= sin() cos cotan() asin()) acotan() atan() cosh() tanh() I= sin()) cos() cotan() asin() sinh() atan() acotan cosh() tanh() cotanh() Degrees O Radians B Degrees O Radians Part (b) What is the conductivity of this wire, in inverse Ohms per meter? 0 tan()) π ( acos() E ^^^L sinh() cotanh() g L P Y d h m r tan() π acos() E ^^^^ π E 1 Part (c) Give an expression for the current density in the wire if an electric field E is passing through it. Write this in terms of the resistivity and the other variables in the problem. J= n R ( ^^^ sin() cos() cotan() asin() atan() acotan() cosh() + + 7 8 9 4 5 6 1 2 3 0 END NO BACKSPACE DEL CLEAR Part (d) Calculate the current in the wire, in milliamperes, if the field strength is 5.28 V/m. - END NO…