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There are two square metal frames as shown in the figure. The outer (blue) frame is...
1, 2, and 3 1. The square loop of wire of the following figure rotates around...
1, 2, and 3
1. The square loop of wire of the following figure rotates around the Y-axis by an angle of 90° in a counter-clockwise direction from the position shown. The induced current in the loop a) ) increases and flows from point B to point A b) decreases and flows from point B to point A. c) increases and flows from point A to point B d) decreases and flows from point A to point B e) is...
A non-uniform magnetic field is pointing into the paper, as shown in the diagram below. The...
A non-uniform magnetic field is pointing into the paper, as shown in the diagram below. The magnetic field is. stronger on the top and gradually becomes weaker on the bottom. A metal loop locates in the middle of the field, shown as the solid square in the graph. If the loop is rotating counter-clockwise around a corner into the position indicated by the dash line. Please carefully answer the following questions with your reasons. (a) Is there any induced current...
1) [7 marks] A long straight wire hangs vertically through the middle of a metal basketball...
1) [7 marks] A long straight wire hangs vertically through the middle of a metal basketball hoop of radius R = 23.0 cm. The hoop is horizontal. The wire carries a current of I = 1.56 A, moving vertically upward from the ground toward the sky. a) Sketch the magnetic field inside the hoop, as viewed from above it. b) What is the magnitude of the magnetic field at the hoop's location? c) Is there a net magnetic flux through...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...
1, 2, and 3
1. The square loop of wire of the following figure rotates around the Y-axis by an angle of 90° in a counter-clockwise direction from the position shown. The induced current in the loop a) ) increases and flows from point B to point A b) decreases and flows from point B to point A. c) increases and flows from point A to point B d) decreases and flows from point A to point B e) is...
A non-uniform magnetic field is pointing into the paper, as shown in the diagram below. The magnetic field is. stronger on the top and gradually becomes weaker on the bottom. A metal loop locates in the middle of the field, shown as the solid square in the graph. If the loop is rotating counter-clockwise around a corner into the position indicated by the dash line. Please carefully answer the following questions with your reasons. (a) Is there any induced current...
1) [7 marks] A long straight wire hangs vertically through the middle of a metal basketball hoop of radius R = 23.0 cm. The hoop is horizontal. The wire carries a current of I = 1.56 A, moving vertically upward from the ground toward the sky. a) Sketch the magnetic field inside the hoop, as viewed from above it. b) What is the magnitude of the magnetic field at the hoop's location? c) Is there a net magnetic flux through...
Consider a cylindrical capacitor like that shown in Fig. 24.6. Let d = rb − ra be the spacing between the inner and outer conductors. (a) Let the radii of the two conductors be only slightly different, so that d << ra. Show that the result derived in Example 24.4 (Section 24.1) for the capacitance of a cylindrical capacitor then reduces to Eq. (24.2), the equation for the capacitance of a parallel-plate capacitor, with A being the surface area of...
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