If the Current Density in a Wire or Radius R

question 13

Multiple Choice

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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