Answer:
I = 2.98 10⁻² A
Explanation:
The equation for the magnetic field within a solenoid is
B = μ₀ n I
Where miuo is the magnetized permittivity that is worth 4π 10⁻⁷ N / A², n is the density is turns per unit length and I is the current
Density is defined as the number of turns per unit length
n = N / L
We replace
B = μ₀ N/L I
I = B L / μ₀ N
We calculate
I = 52 10⁻⁶ 3.6 / (4π 10⁻⁷ 5000)
I = 2.98 10⁻² A
