Two infinitely long straight wires lie in the xy-plane along the lines x = R. The...
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Two infinitely long straight wires lie in the xy-plane along the lines x = R. The wire located at x = +R carries a constant current I, and the wire located at x = -R carries a constant current I2. A circular loop of radius R is suspended with its centre at (0, 0, 3R) and in a plane parallel to the xy-plane. This loop carries a constant current I in the clockwise direction as seen from above the loop. The current in the wire is taken to be positive if it is in the + direction. Which of the following statements regarding the magnetic field B is (are) true? (A) If I=I, then B cannot be equal to zero at the origin (0, 0, 0) (B) If I >0, and I <0, then B can be equal to zero at the origin (0, 0, 0) (C) If I <0, and I > 0, then B can be equal to zero at the origin (0, 0, 0) (D) If I=I, then the z-component of the magnetic field at the centre of the loop is Hol 2R Two infinitely long straight wires lie in the xy-plane along the lines x = R. The wire located at x = +R carries a constant current I, and the wire located at x = -R carries a constant current I2. A circular loop of radius R is suspended with its centre at (0, 0, 3R) and in a plane parallel to the xy-plane. This loop carries a constant current I in the clockwise direction as seen from above the loop. The current in the wire is taken to be positive if it is in the + direction. Which of the following statements regarding the magnetic field B is (are) true? (A) If I=I, then B cannot be equal to zero at the origin (0, 0, 0) (B) If I >0, and I <0, then B can be equal to zero at the origin (0, 0, 0) (C) If I <0, and I > 0, then B can be equal to zero at the origin (0, 0, 0) (D) If I=I, then the z-component of the magnetic field at the centre of the loop is Hol 2R
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Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
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