Ampere's Law with Calculus Video Lessons

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Problem: Consider the toroid shown in the figure (inner radius 5cm, outer radius 10cm). What is the magnitude of the magnetic field inside a toroid of 1200 turns carrying a current 0.8 A at a distance 7cm from the center of the toroid? (Hint: Use Ampere's Law applied to a closed loop in the toroid mid-plane, as shown by a dash line) A) 2.74 mT B) 1.67 mT C) 3.33 mT D) 4.92 mT E) 0.83 mT

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Problem Details

Consider the toroid shown in the figure (inner radius 5cm, outer radius 10cm). What is the magnitude of the magnetic field inside a toroid of 1200 turns carrying a current 0.8 A at a distance 7cm from the center of the toroid? (Hint: Use Ampere's Law applied to a closed loop in the toroid mid-plane, as shown by a dash line)

A) 2.74 mT

B) 1.67 mT

C) 3.33 mT

D) 4.92 mT

E) 0.83 mT

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