A Single Circular Loop of Wire with Radius 0

question 30

Multiple Choice

A single circular loop of wire with radius 0.025 m carries a current of 6.0 A. It is placed at the center of a solenoid that has length 0.60 m, radius 0.075 m, and 1200 turns.
-Determine the value of the current in the solenoid so that the magnetic field at the center of the loop is zero tesla.

• A)1.4 × 10^-1 A
• B)2.5 × 10^-4 A
• C)6.0 × 10^-2 A
• D)5.0 × 10^-3 A
• E)9.3 × 10^-2 A

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