As shown in the figure, a very long cylindrical rod with radius R = 3.0 (m) is carrying a nonuniform current density J = ar. Wherer is the radial distance and a is a positive constant. If the magnitude of magnetic field is B = 0.5 (T) at r=R, what is the constant a in SI units? π = 3 A) 440 B)- 2440 3 Αμο C)- D) 2440 Ho /R j
As shown in the figure, a very long cylindrical rod with radius R = 3.0 (m) is carrying a nonuniform current density J = ar. Wherer is the radial distance and a is a positive constant. If the magnitude of magnetic field is B = 0.5 (T) at r=R, what is the constant a in SI units? π = 3 A) 440 B)- 2440 3 Αμο C)- D) 2440 Ho /R j
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Transcribed Image Text:As shown in the figure, a very long cylindrical rod with radius R = 3.0 (m) is carrying a
nonuniform current density Jar. Wherer is the radial distance and a is a positive
constant. If the magnitude of magnetic field is B = 0.5 (T) at r = R, what is the constant
a in SI units? π = 3
2
A)
440
B)
2440
C)
3
4μ0
D)
3
2440
E)
fo
/R
j
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