The required current is approximately 5.73 Amperes.
Reluctance of core: [ \mathcalR_c = \fracl_c\mu_0 \mu_r A = \frac0.4(4\pi \times 10^-7)(800)(5\times 10^-4) ] [ \mathcalR_c = \frac0.4(1.0053 \times 10^-3) \approx 398 \ \textkA-turns/Wb ] magnetic circuits problems and solutions pdf
Same as Problem 2, but due to fringing, the effective gap area is than the core area. The required current is approximately 5
| Electric Circuit | Magnetic Circuit | | :--- | :--- | | - Voltage ($V$) | Magnetomotive Force (MMF) ($F$ or $\mathcalF$) | | Current ($I$) | Magnetic Flux ($\Phi$) | | Resistance ($R$) | Reluctance ($\mathcalR$) | | Conductivity ($\sigma$) | Permeability ($\mu$) | but due to fringing