p2s10_lec01_field_voltage - Physics 1200 Lecture 1 Review...

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Unformatted text preview: Physics 1200 Lecture 1 Review of Electrostatics • Coulomb’s Law • Electric Field • Electric Potential • Electrostatic Potential Energy Coulomb’s Law 1 2 12 12 2 12 12 1 2 9 2 2 12 2 2 1 ˆ 4 is the force on q due to 1 9.0 10 N m /C 4 ( 8.85 10 C /N m ) πε πε ε- = 2245 × × = × × r r q q F r r F q Unlike charges attract. Like charges repel. Vector forces 1 12 13 14 15 The force on any particular charge is the sum of the vector forces due to all other charges that exert force on it. ... Remember you add vector forces by separating each force i = + + + + r r r r r F F F F F nto orthogonal components (e.g. - x, y, z), adding, and then recombining. It is very useful to look at the problem carefully and then choose axes to simplify calculation. iClicker question 1.01 +q-3q Two charges of +q and -3q are shown. For which of the lettered positions on the line could the net force on a test charge be zero? A B C D – all of them E – none of them The Electric Field •When E is known, the force, F , on a charge, q , is given by: • F = q E • The direction of E is the direction of the force on a positive test charge....
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This note was uploaded on 10/17/2011 for the course PHYS 1010 taught by Professor Schroeder during the Spring '07 term at Rensselaer Polytechnic Institute.

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p2s10_lec01_field_voltage - Physics 1200 Lecture 1 Review...

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