5. The loop of wire shown in Figure. A2.3 forms a right triangle and carries a current I = 5.00 A in the direction shown. The loop is in a uniform magnetic field that has magnitude B = 3.00 T and the same direction as the current inside PQ of the loop. (a) Find the force exerted by the magnetic field on each side of the triangle. If the force is not zero, specify its direction. (b) What is the net force on the loop? (c) The loop is pivoted about an axis that lies alongside PR. Use the forces calculated in part (a) to calculate the torque on each side of the loop. (d) What is the magnitude of the net torque on the loop? Calculate the net torque from the torques calculated in part (c) Do these two results agree? (e) Is the net torque directed to rotate point Q into the plane of the figure or out of the plane of the figure? 0.600 m P 1/2 0.800 m Figure A2.3 B R

5. The loop of wire shown in Figure. A2.3 forms a right triangle and carries a current I = 5.00 A in the direction shown. The loop is in a uniform magnetic field that has magnitude B = 3.00 T and the same direction as the current inside PQ of the loop. (a) Find the force exerted by the magnetic field on each side of the triangle. If the force is not zero, specify its direction. (b) What is the net force on the loop? (c) The loop is pivoted about an axis that lies alongside PR. Use the forces calculated in part (a) to calculate the torque on each side of the loop. (d) What is the magnitude of the net torque on the loop? Calculate the net torque from the torques calculated in part (c) Do these two results agree? (e) Is the net torque directed to rotate point Q into the plane of the figure or out of the plane of the figure? 0.600 m P 1/2 0.800 m Figure A2.3 B R

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter22: Magnetic Forces And Magnetic Fields

Section: Chapter Questions

Problem 33P: One long wire carries current 30.0 A to the left along the x axis. A second long wire carries...

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Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

Question

5. The loop of wire shown in Figure. A2.3 forms a right triangle and carries a current I = 5.00 A
in the direction shown. The loop is in a uniform magnetic field that has magnitude B = 3.00 T
and the same direction as the current inside PQ of the loop.
(a) Find the force exerted by the magnetic field on each side of the triangle. If the force is not
zero, specify its direction.
(b) What is the net force on the loop?
(c) The loop is pivoted about an axis that lies alongside PR. Use the forces calculated in part
(a) to calculate the torque on each side of the loop.
(d) What is the magnitude of the net torque on the loop? Calculate the net torque from the
torques calculated in part (c) Do these two results agree?
(e) Is the net torque directed to rotate point Q into the plane of the figure or out of the plane
of the figure?
Q
0.600 m
P
I
0.800 m
Figure A2.3
B
R

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