Answer:
0.03 T
Explanation:
The magnetic field B at the center of a solenoid is given by B = μ₀Ni/L where
μ₀ = permeability of free space = 4π × 10⁻⁷ H/m, N = number of turns of solenoid = 5000 turns, i = current in solenoid = 5 A and L= length of solenoid. Since we are not given length of solenoid, let us assume it is 1 meter. So, L = 1 m
So, B = μ₀Ni/L
= 4π × 10⁻⁷ H/m × 5000 turns × 5 A/1m
= 4π × 10⁻⁷ H/m × 25000 A-turns/m
= 314159.27 × 10⁻⁷ T
= 0.031415927 T
≅ 0.03 T
