PHYS 2002 FUNDAMENTALS OF PHYSICS LSU

PHYS2002 Section 4 Spring 2009 Instructor: Dr. Asoka Sekharan Lecture: Section 4: 12:10 1:30 PM, T TH Lecture Room: 130 Nicholson Hall Office Hours: 9:30-10:30 PM, Every weekday Office: 217A, Nicholson Ph: 334-2031 E-Mail: asoka@lsu.edu Required Te

Parallel plate capacitor A s E B + + + + +9 V +6 V - The positive plate is at a potential of +9 V and the negative plate is at 0 V. What Wh t would the equipotential surfaces ld th i t ti l f look like between the plates? +3 V 0V They would be

21.7 Magnetic Fields Produced by Currents Moving charges experience a force in magnetic fields. g g p g Currents also feel a force in a magnetic field. F = qvBsin q F = ILBsin Until 1820 everyone thought electricity and magnetism were completely se

21.4 The Mass Spectrometer Ionized particles are accelerated by a potential difference V. By conservation of energy, we know that this potential energy goes into the kinetic energy of the particle: KE = EPE 1 mv 2 = qV 2 Solve this for the speed,

Problem 1 A conducting rod of length L is being pulled to the right along a set of frictionless conducting rails. An external force pulls the rod along at a constant speed v. The rod and rails sit in a uniform magnetic field B that points everywhere

19.1 Potential Energy The electric force, like gravity, is a conservative force: Recall Conservative Forces 1. The work done on an object by a conservative force depends only on the object\'s initial and final p y j position, and not the path taken. 2

27.6 Resolving Power Resolving Power: The ability of an optical instrument to distinguish (or resolve) g y p g ( ) two closely-spaced objects. Look at the headlights of a car as it backs away from you to a far distance: When the car is close, it is

21.1 Magnetic Fields Magnetism has been observed since roughly 800 B.C. g g y Certain rocks on the Greek peninsula of Magnesia were noticed to attract and repel one another. Hence the word: Magnetism. So just like charged objects, magnetized objects

20.4 Electrical Power Our standard definition of power is: Power = Work . Time So what would electrical power be? From the definition of potential: V= W W = qV q Thus, qV P= P = IV t We can write this different ways using Ohm\'s Law, V=IR: P