Question

find the total flux of the ring given the cross sectional area of the ring is 400square meters,with a mean diameter of 25cm, it's turns are500,with a relative permiability of 250,it has a resistance of 474 and it supply voltage of 240​

Answer 1

The total flux of the ring can be calculated using the following formula:

Φ = μ₀ * μ₁ * N * A / l

Where:

μ₀ = 4π * 10^-7 (permeability of free space)
μ₁ = relative permeability (250)
N = number of turns (500)
A = cross-sectional area of the ring (400 m^2)
l = mean circumference of the ring = π * diameter (25 cm = 0.25 m)
Plugging in the values:

Φ = 4 * π * 10^-7 * 250 * 500 * 400 / (π * 0.25) = 3.142 * 10^-4 Wb

Note: This formula assumes that the ring has a uniform magnetic field and does not account for any loss of magnetic energy due to resistance (R) or the supply voltage (V