Current Density: If the Current Density in a Wire or Radius

question 49

Multiple Choice

Current density: If the current density in a wire or radius R is given by J = kr, 0 < r < R, what is the current in the wire?

• A) 2πkR³/3
• B) 3πkR³/2
• C) kR³/3
• D) kR²
• E) kR²/2

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