A Tightly Wound Solenoid Is 15 Cm Long,has 350 Turns,carries $\chi$

question 20

Multiple Choice

A tightly wound solenoid is 15 cm long,has 350 turns,carries a current of 3.0 A,and has an aluminum core ( $\chi$ _m = 2.3 $\times$ 10^-5) .If you ignore end effects,you will find that the value of at the center is approximately

• A)11 mT
• B)8.8 mT
• C)1.8 mT
• D)7.0 mT
• E)6.2 mT

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