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MasteringPhysics Assignment Print View

# MasteringPhysics Assignment Print View - HW 06 Due 11:00pm...

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HW 06 Due: 11:00pm on Monday, March 21, 2011 Note: To understand how points are awarded, read your instructor's Grading Policy . [Switch to Standard Assignment View ] Exercise 28.32 A closely wound, circular coil with radius 2.20 has 820 turns. Part A What must the current in the coil be if the magnetic field at the center of the coil is 5.90×10 −2 ? ANSWER: = 2.52 Correct Part B At what distance from the center of the coil, on the axis of the coil, is the magnetic field half its value at the center? ANSWER: = 1.69 Correct Problem 28.64 The long, straight wire AB shown in the figure carries a current of 14.0 . The rectangular loop whose long edges are parallel to the wire carries a current of 5.00 .

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Part A Find the magnitude of the net force exerted on the loop by the magnetic field of the wire. ANSWER: = 7.97×10 −5 Correct Part B Find the direction of the net force exerted on the loop by the magnetic field of the wire. ANSWER: to the left to the right upward downward Correct Induced Current in a Metal Loop Conceptual Question For each of the actions depicted below, a magnet and/or metal loop moves with velocity ( is constant and has the same magnitude in all parts). Determine whether a current is induced in the metal loop. If so, indicate the direction of the current in the loop, either clockwise or counterclockwise when seen from the right. The axis of the magnet is lined up with the center of the loop. Part A
For the action depicted in the figure, indicate the direction of the induced current in the loop (clockwise, counterclockwise or zero, when seen from the right, that is, from the side the magnet is approaching to). Hint A.1 Magnetic flux Hint not displayed Hint A.2 Induction and changing flux Hint not displayed Hint A.3 How to find the direction of the magnetic field produced by a loop Hint not displayed Hint A.4 Find the initial magnetic field through the loop Hint not displayed Hint A.5 Find the change in magnetic flux Hint not displayed Hint A.6 Induced magnetic field Hint not displayed ANSWER: clockwise counterclockwise zero

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Correct Part B For the action depicted in the figure, indicate the direction of the induced current in the loop (clockwise, counterclockwise or zero, when seen from the right, that is, from the side the magnet is moving away from). Hint B.1 Find the initial magnetic field through the loop Hint not displayed Hint B.2 Find the change in magnetic flux Hint not displayed Hint B.3 Induced magnetic field Hint not displayed ANSWER: clockwise counterclockwise zero Correct Part C
For the action depicted in the figure, indicate the direction of the induced current in the loop (clockwise, counterclockwise or zero, when seen from the right, that is, from the side where the magnet is). Hint C.1

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MasteringPhysics Assignment Print View - HW 06 Due 11:00pm...

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