Q7 - the magnetic field at points 1 and 2 5 A 5 A 1 2 5 A 10 A 2 cm 2 cm 5 cm “1” “2” 5 What is the net force on wire number 3 shown in the

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Physics 2212 Homework 7 (due: April 19) 1. The magnetic field at the center of a 1.0-cm-diameter loop is 6 mT. What is the current in the loop? 2. Two concentric current loops lie in the same plane. The smaller loop has a radius of 3.0 cm and a current of 12 A. The bigger loop has a current of 20 A. The magnetic field at the center of the loops is found to be zero. What is the radius of the bigger loop? 3. What are the magnetic field strength and direction at points 1 and 2 shown in the figure. 4. The two insulated wires in the figure cross at a 30 0 angle but do not make electrical contact. Each wire carries a 5.0 A current. Points 1 and 2 are each 4.0 cm from the intersection and equally distant from both wires. What are the magnitude and direction of
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Unformatted text preview: the magnetic field at points 1 and 2? 5 A 5 A 1 2 5 A 10 A 2 cm 2 cm 5 cm “1” “2” 5. What is the net force on wire number 3 shown in the figure? 6. Find the magnitude of magnetic field at point P. Point P is the center of all three loops. 7. A wire loop with an area of 0.020 m 2 is perpendicular to a uniform magnetic field of 0.30 T. If the field drops to zero in 45 ms, what is the average induced emf in the loop? 8. A 20-cm-diameter loop is perpendicular to a uniform magnetic field, which is increasing at rate of 0.5 T/s. The loop resistance is 0.10 ohm. Find the induced current in the loop. 20 A 20 A 10 A P 20 cm 9 cm 6 cm 3 cm 10 A 10 A 2 cm 2 cm 10 A 1 2 3...
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This note was uploaded on 02/15/2012 for the course PHYS 2212 taught by Professor Staff during the Spring '08 term at Georgia State University, Atlanta.

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Q7 - the magnetic field at points 1 and 2 5 A 5 A 1 2 5 A 10 A 2 cm 2 cm 5 cm “1” “2” 5 What is the net force on wire number 3 shown in the

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