![]() ![]() In the example below we use the application inSSIDer. You can find more information about that here: Map your wireless network with a heat mapper. However, if you are looking to measure coverage and signal strength for your own network, you will have more benefit from using a heat mapper. For this, also see further advice in Five questions to ask when your phone does not find Wi-Fi Mobiles, computers, or other devices that can't find the network.Slow or unstable wireless connections in your home.The uniform electric field has a magnitude of 5.0 × 108 N/C and passes through the left and right sides of the cube perpendicular to the surface. The length of each edge of the cube is 1.0 m. A cubical Gaussian surface is placed in a uniform electric field as shown in the figure. Which one of the following phrases most accurately describes the initial motion of the dipole if it is released from rest in the position shown? A rigid electric dipole is free to move in the electric field represented in the figure. The magnitude of the ratio (q2/ q1) is less than one. The magnitude of the ratio (q2/ q1) is less than one.īoth q1and q2 have the same sign of charge. The magnitude of the electric field is the same everywhere. The electric field is strongest midway between the charges. Which one of the following statements concerning this situation is true? Toward the left of the page toward the bottom of the page The figure shows the electric field lines in the vicinity of two point charges. Do not consider any effects due to gravity. A negatively charged particle with a charge -3Q follows path 2 while it moves through this field. The numbered lines show the paths taken by the five particles. Five particles are shot from the left into a region that contains a uniform electric field. It is constant between the plates except near the edges. It is a maximum near the negatively charged plate. It is a maximum near the positively charged plate. It is a maximum midway between the plates. Which drawing correctly shows where the charges reside when they are in equilibrium?ī D Which one of the following statements is true concerning the strength of the electric field between two oppositely charged parallel plates? Each object is made from copper and has a net charge, as the plus and minus signs indicate. ![]() ![]() For the points indicated, rank the magnitudes of the electric field in descending order (largest first).ī, A, C B, C, A The drawings show (in cross section) two solid spheres and two spherical shells. What are the directions of the electric fields at points A, B, and C?ĭue south at A, southeast at B, due east at Cĭue north at A, northwest at B, due east at Cĭue south at A, southwest at B, due west at Cĭue south at A, northeast at B, due west at Cĭue north at A, southeast at B, due west at C Due south at A, southeast at B, due east at C The drawing shows some electric field lines. The drawing shows an electric field line. The magnitude of the net field at the center of the square is the same in each arrangement of the charges. ![]() In which arrangement (if any) does the net electric field at the center of the square have the greatest magnitude? Each charge, no matter what its algebraic sign, has the same magnitude. Three point charges (some positive and some negative) are fixed to the corners of the same square in various ways, as the drawings show. Where on the line that passes through the charges is the one spot where the total electric field is zero?īetween the charges, to the left of the midpoint.īetween the charges, to the right of the midpoint. The negative charge has the greater magnitude. The drawing shows a positive and a negative point charge. ![]()
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