Gradebook ORION Downloadable eTextbook FULL SCREEN PRINTER VERSION BACK Chapter

Question

Gradebook ORION Downloadable eTextbook FULL SCREEN PRINTER VERSION BACK Chapter 21, Problem 42 Two coils have the same number of circular turns and carry the same current. Each rotates in a magnetic field acting perpendicularly to its axis of rotation. Coil 1 has a radius of 7.4 cm and rotates in a 0.25-T field. Coil 2 rotates in a 0.50-T field. Each coil experiences the same maximum torque. what is the radius (in cm) of coil 27 Units Number By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor

Explanation / Answer

= x B
||max|| = B
||max|| = NIAB

(N)(I)(A1)(B1) = (N)(I)(A2)(B2)
(A1)(B1) = (A2)(B2)
(r1)²(B1) = (r2)²(B2)
(r1)²(B1) = (r2)²(B2)

(7.4 cm)²(0.25 T) = (r2)²(0.50 T)
r2 = 5.23 cm

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