WebThe torsion constant is a geometrical property of a bar's cross-section which is involved in the relationship between angle of twist and applied torque along the axis of the bar, for a homogeneous linear-elastic bar. The torsion constant, together with material properties and length, describes a bar's torsional stiffness. WebWire cross sectional area calculations The n gauge wire's cross sercional area A n in kilo-circular mils (kcmil) is equal to 1000 times the square wire diameter d in inches (in): An …

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WebMar 26, 2015 · Cross section of wire (area) = [/B]pi (r)^2 Current Density = J = I/A The Attempt at a Solution [/B] Since we are attempting to find the current in a bounded section we need to subtract the outer bound area from the lower bound area: pi (R)^2 - pi (.917R)^2 = bounded section area Since we have the current density we can use I = JA: WebSecond Variable Affecting Electrical ResistanceSecond, the cross-sectional area of the wires will affect the amount of resistance. Wider wires have a greater cross-sectional area. Water will flow through a wider pipe at a higher rate than it will flow through a narrow pipe. simply hair grass valley

Answered: A wire of circular cross-section… bartleby

WebA wire of circular cross-section carries current density that is not uniform but varies with distance from the center as j (r)=j0(1- (r/R)2), for radius r in the range 0 < r < R. Here, j0 is a constant with units amperes per square meter, and the radius of the wire is R = 0.49 mm. WebSolution Verified by Toppr Correct option is D) Here, current is uniformly distributed across the cross-section of the wire, therefore, current enclosed in the amperean path formed at a distance r 1(= 2a) =(πa 2πr 12)×I , where I is total current ∴ Magnetic field at P 1 is B 1 = Pathμ 0×current enclosed B 1= 2πr 1μ 0×(πa 2πr 12)×I= 2πa 2μ 0×Ir 1 WebQ4Two wires, A and B, of circular cross-section are made of the same metal and have equal lengths, but the reistance of wire A is three times greater that that of wire B. What is the How do their radii compair? Recall our equation R = L / A Being made of the same material means the resistivity They have the same lengths. simply hair grass valley ca