A Long Solenoid with 15 Turns Per Centimeter Has a Core

question 54

Multiple Choice

A long solenoid with 15 turns per centimeter has a core of annealed iron.When the current is 1.00 A,the magnetic field inside the iron core is 2.46 T.The relative permeability K_m is approximately

• A)1800
• B)1310
• C)7.64 \(\times\) 10^-4
• D)5.56 \(\times\) 10^-4
• E)1500

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