Question

A solenoid has length

Answer 1

Answer:

The magnetic field is 24.2 mT.

Explanation:

The magnetic field can be calculated with the following equation:

$B = \frac{\mu_{0}iN}{L}$

Where:

i: is the current = 5.57 A

N: is the number of turns = 5*850 turns (it is five close-packed)

L: is the length = 1.23 m

$\mu_{0}$: is the permeability = 4π*10⁻⁷ T*m/A          

Hence, the magnetic field is:

$B = \frac{4\pi \cdot 10^{-7} T*m/A*5.57 A*5*850}{1.23 m} = 0.0242 T = 24.2 mT$

Therefore, the magnetic field is 24.2 mT.

I hope it helps you!