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11111nata11111 [884]
3 years ago
14

A hollow cylinder with an inner radius of 4.0 mm and an outer radius of 30 mm conducts a 3.0-Acurrent flowing parallel to the ax

is of the cylinder. If the current density is uniform throughout the wire,what is the magnitude of the magnetic field at a point 12 mm from its center
Physics
1 answer:
Kryger [21]3 years ago
8 0

Answer:

the magnitude of the magnetic field is 0.45 mT

Explanation:

Knowing the formula

B = \frac{m0* (i - i')}{2* Pi* r}

i = 3A    i' = 0A

B = \frac{4*3.1416e^{-7} * (3-0) }{2*3.1416*0.012}

B = 0.45 mT

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