A Long Solenoid Is Wound Around a Titanium Core $\chi$ _m = 7

question 62

Multiple Choice

A long solenoid is wound around a titanium core ( $\chi$ _m = 7.06 $\times$ 10^-5) and carries a current.If the core is removed while the current is held constant,the magnetic field inside the solenoid

• A)remains constant.
• B)increases by approximately 0.004%.
• C)decreases by approximately 0.007%.
• D)increases by approximately 0.007%.
• E)decreases by approximately 0.004%.

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