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Week 4 Physics 2 for Engineering

by: Aubrey Kenderdine

Week 4 Physics 2 for Engineering PHYS 1155

Marketplace > Northeastern University > Physics > PHYS 1155 > Week 4 Physics 2 for Engineering
Aubrey Kenderdine
Northeastern University

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About this Document

Pre and Post ILS #4, lecture notes, and lab notes on chapter 23
Physics for Engineering 2
Latika Menon
Class Notes
Physics, MCAT Physics, General Physics, Engineering, Bionengineering
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This 14 page Class Notes was uploaded by Aubrey Kenderdine on Friday September 30, 2016. The Class Notes belongs to PHYS 1155 at Northeastern University taught by Latika Menon in Fall 2016. Since its upload, it has received 13 views. For similar materials see Physics for Engineering 2 in Physics at Northeastern University.

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Date Created: 09/30/16
Physics 2 for Engineering Week 4 Notes 26 September – 29 September  Chapter 23 Electric potential energy is a scalar quantity Unit is Joules (J) Potential energy for two point charges assuming U  = 0 whea r  = infinita  U = kQq / r Review:  F = kQq / r 2 E = kq / r2 Electric potential is a scalar quantity  Unit of electric potential is volts (V) 1 V = 1 J / C Unit of electric field is N / C or V / m Assume V = 0 when r  = inainity V = kq / r ΔV = ­ E * d at constant electric field For collection of point charges  V = Σ kQ / r E direction points from positive charge to negative charge Positive charge moves in the direction of E from high to low potential Negative charge moves opposite to the direction of E from low to high potential  E is perpendicular to equipotential lines For infinitely long cylinder or wire V b– V  a ­ λ / 2πƐ  *0ln (r /rb) a For ring of charge V = Q / 4πƐ √(0 +a ) 2 Point charge­ equipotential lines are spherical Infinite line­ equipotential lines are cylindrical Infinite sheet­ equipotential lines are flat surfaces V = U / q U = qV


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