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To solve magnetic circuit problems, it is easiest to view them through the lens of an electrical circuit. This is known as the . Electrical Quantity Magnetic Quantity Voltage (V) Magnetomotive Force (MMF or Fscript cap F Current (I) Magnetic Flux ( Resistance (R) Reluctance ( Rscript cap R Conductivity ( Permeability ( The Governing Equation: F=Φ×Rscript cap F equals cap phi cross script cap R (Number of turns 2. Common Challenges in Magnetic Circuits