Two long parallel wires carry currents of 3.59 A and 4.41 A. The magnitude of the...

Question

Question

Two long parallel wires carry currents of 3.59 A and 4.41 A. The magnitude of the force per unit lengh acting on each wire is 6.39

science physics

Answer 1

Answer #1

F=IBL

B=U0*I/(2*pi*r)

6.39*10^-5 =(3.59*4.41*2*10^-7 )/r

r=20m

Answer 2

Answer #2

dF/dl=munot)I1I2/2pi)d

dF/dl=2*10^-7*3.59*4.41/d=6.39*10^-5

d=0.049 m=4.9cm (ans)

Answer 3

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