Question # 1: The magnetic circuit shown in the figure has dimensions A=A= 9 cm?, g= 0.05 cm, l = 30 cm, and N= 500 tums. Assume the value u, = 70,000 for core material. Find the reluctances R. and Re 2. For the condition that the magnetic flux density in the core B=1.0 T, find 1. а. the flux ø b. the current i Magnetic flux lines Mean core length l Air gap. permeability Ho- Area A Air gap length g T Winding. Magnetic core permeability u, Area A. N turns

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KVL and KCL

KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.

Sign Convention

Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.