What Is the Radius of a Tightly Wound Solenoid of Circular

question 56

Multiple Choice

What is the radius of a tightly wound solenoid of circular cross-section that has 180 turns if a change in its internal magnetic field of 3.0 T/s causes a 6.0 A current to flow? The resistance of the circuit that contains the solenoid is 17 Ω.The only emf source for the circuit is the induced emf.

• A)0.25 m
• B)0.014 m
• C)0.54 m
• D)0.043 m

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