Basic Principles of Electromagnetism
Basic Principles of Electromagnetism
Basic Principles of Electromagnetism
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C h a p t e r 4 | 90Figure 4.4: Maxwell’s Screw Law4.3 ELECTROMAGNETIC EFFECTA flow <strong>of</strong> current through a wire produces a magnetic field in a circular path aroundthe wire. The field patterns <strong>of</strong> a current flow in a conductor can de determine usingboth rules <strong>of</strong> right hand grip or Maxwell’s Screw. Note that, conventional currentflow towards or inside the conductor is marked by cross (X) and current flow away oroutside the conductor is marked as dot ( · ).4.3.1 Single ConductorThe direction <strong>of</strong> the field pattern in going and out going produced by a currentflowing through a single conductor can be determine by applying both rules asillustrated in Figure 4.5.Source: Fundamental Electrical & Electronic <strong>Principles</strong> by Christopher R RobertsonFigure 4.5: Current flow (a) in going (b) out going<strong>Basic</strong> <strong>Principles</strong> <strong>of</strong> <strong>Electromagnetism</strong>
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