Question

In: Physics

A long cylindrical metal pipe with inner diameter 0.2m and outer diameter 0.22 cm carries 2A...

A long cylindrical metal pipe with inner diameter 0.2m and outer diameter 0.22 cm carries 2A current uniformly distribted. what is the magetic field at all points in space?

Expert Solution

Ampere's Law applies

B, magnetic field.
r. within the closed path
I . Electric current.

a)

Current enclosed within the surface.

b)

area through which all electrical power

The closed surface area

${A}'= \pi \left ( r^{2}-r_{inner}^{2} \right )=\pi \left ( \left ( r^{2}-\left ( 0.2m \right )^{2} \right )=\pi \left ( r^{2}-0.04 \right )m^{2}$

current flowing in the closed surface

evaluating

c)

Current enclosed within the surface.

Note that in each case, the results are expressed as a function of r, this way it is possible to get the value of the magnetic field knowing the distance

genius_generous answered 1 hour ago

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