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Unformatted text preview: Ampre's Law: Magnetic Field Inside a Long Solenoid
Apply Ampre's law, I B d = 0 IC , to the rectangular Amperian loop shown. Magnetic field inside: strong, uniform, directed along axis. Magnetic field outside: negligibly weak. Number of turns per unit length: n. Total current through Amperian loop: IC = nIa (I is the current in the wire). Ampre's law applied to rectangular loop: Ba = 0 nIa. Magnetic field inside: B = 0 nI. tsl241 p.1/1 ...
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- Spring '07