cammiecutes2687 cammiecutes2687
  • 13-07-2019
  • Physics
contestada

If the current density in a wire or radius R is given by J-k+5,0F wire? R, what is the current in the wire?

Respuesta :

AbsorbingMan AbsorbingMan
  • 25-07-2019

Answer:

I = [tex]R^{2}[/tex](K+5)

Explanation:

Given :

J = k+5

Now selecting a thin ring in the wire of radius "r" and thickness dr.

Current through the thin ring is

dI = J X 2πrdr

dI = (K+5) x 2πrdr

Now integrating we get

I = [tex]\int_{0}^{R} = (K+5).2\pi rdr[/tex]

I = (K+5) 2π[tex]\int_{0}^{R} rdr[/tex]

I = (K+5) 2π [tex]\frac{R^{2}}{2}[/tex]

I = [tex]R^{2}[/tex](K+5)

Answer Link

Otras preguntas

What is the lingering effect that communism might have on Eastern Europe?
The theme of the Roosevelt Administration's response to the Depression was Relief, Recover, and Reform. Describe the purpose of each of these themes and provide
If x varies inversely with y and x = 4 when y = 9, find x when y = 6.
What does the theory of uniformitarianism state? A. Evidence from fossils can give us glimpses into the past B. Major catastrophic events shaped the Earth C. G
Which of these statements is always true? Question 12 options: If an object is moving, a net force is acting on it. An object in equilibrium must not be in mo
What are four of the six reforms efforts that brought about change in the 1800s?
Match each character with his or her role in the play.
PLEASE HELP ASAP. jshdjdndnnd
how long ago do science believe that indigenous people began to show up in North America
To receive an annuity of $8000 for 3 years if interest is earned at 10% annually how much should you invest