review_on_problems

# review_on_problems - charged bead is free to slide on the...

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A different review A review of the following topics by working on problems 1. Electric charge, potential, force, field and flux. Coulomb's Law Gauss’s Law. 2. Capacitance and resistance. Ohm’s Law. 3. Circuits. Kirchhoff’s Rules.

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Electric field of a dipole Calculate the electric field of a point on the x and y axis, far away from an electric dipole. x x P Formula to use: For a point on x:
Calculate the electric field of a point on the x and y axis, far away from an electric dipole. x x P For a point on y, the field y components cancel.

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Electric field of a charged rod Calculate the electric field at the origin O of the coordinator system, generated by an evenly charged rod with total charge + Q , with length l , and placed distance a away from O on the x-axis. O Formula to use:
Force/field equilibrium Two small positively charged beads are fixed at the ends of a horizontal insulating rod. A third small

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Unformatted text preview: charged bead is free to slide on the rod. At what position is the third bead in equilibrium? Is this a stable equilibrium? Formula to use: O x q 3 stable equilibrium ? Translate: prove that the electric potential energy of the whole system when bead 3 at position x is the minimum. O x q 3 Formula to use: Gauss’s Law a type X problem? A sphere of radius 2 a is made of insulating material that has uniform volume charge density ρ . Assume that the material itself does not affect the electric field (i.e., ignore its dielectric effect). A spherical cavity of radius a is made in the original sphere as shown in the figure. Calculate the electric field in the cavity. c r r r r Some easier problems Finding the C eq Some easier problems Finding the C eq Kirchhoff’s rules Determine the current in each branch....
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## This note was uploaded on 05/06/2008 for the course PHYS 1304 taught by Professor Ye during the Spring '08 term at SMU.

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review_on_problems - charged bead is free to slide on the...

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