A hollow cylinder with an inner radius of and an outer radius of conducts a 3.0-A current flowing parallel to the axis of the cylinder.If the current density is uniform throughout the wire,what is the magnitude of the magnetic field at a point from its center? (μ₀ = 4π × 10^-7 T ∙ m/A) A)7.2 × 10^-6 T B)8.0 × 10^-6 T C)8.9 × 10^-7 T D)7.1 × 10^-8 T

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The Answer of A hollow cylinder with an inner radius of and an outer radius of conducts a 3.0-A current flowing parallel to the axis of the cylinder.If the current density is uniform throughout the wire,what is the magnitude of the magnetic field at a point from its center? (μ₀ = 4π × 10^-7 T ∙ m/A) A)7.2 × 10^-6 T B)8.0 × 10^-6 T C)8.9 × 10^-7 T D)7.1 × 10^-8 T

A Hollow Cylinder with an Inner Radius of and an Outer