w = 1.05 * 10 - 8 | 1.05 * 10 - 8 | Problem 15 : Two very long, parallel wires a

A. F = u0i1i2L/2pid B. F/L -= 4pi*10^-7 * 0.15*0.35/2pi*0.035) F/L = 3*10^-7 N/m C. W/L = F/Ld = 3*10^-7 * 0.035 = 1.05*10^-8 J/m

ID: 3900574 • Letter: W

Question

w = 1.05 * 10- 8| 1.05 * 10- 8| Problem 15: Two very long, parallel wires are separated by d = 0.035 m. The first wire carries a current of I1 = 0.15 A. The second wire carries a current of I2 = 0.35A.

Randomized Variables d = 0.035 m
I1 = 0.15 A
I2 = 0.35 A Part (a) Express the magnitude of the force between the wires per unit length, f, in terms of I1, I2, and d.
Part (b) Calculate the numerical value of f in N/m.
Part (c) Is the force repulsive or attractive?
Part (d) Express the minimal work per unit length needed to separate the two wires from d to 2d.
Part (e) Calculate the numerical value of w in J/m.
w = 1.05 * 10- 8|

A. F = u0i1i2L/2pid

B. F/L -= 4pi*10^-7 * 0.15*0.35/2pi*0.035)

F/L = 3*10^-7 N/m

C. W/L = F/Ld = 3*10^-7 * 0.035 = 1.05*10^-8 J/m

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