B - Purdue Physics
... A microscopic view of electric circuits: • Are charges used up in a circuit? • How is it possible to create and maintain a nonzero electric field inside a wire? • What is the role of the battery in a circuit? In an electric circuit the system does not reach equilibrium! Steady state and static equil ...
... A microscopic view of electric circuits: • Are charges used up in a circuit? • How is it possible to create and maintain a nonzero electric field inside a wire? • What is the role of the battery in a circuit? In an electric circuit the system does not reach equilibrium! Steady state and static equil ...
Lecture Notes 03: Electrostatic Potential, Poisson and Laplace Equation, Boundary Conditions
... We saw in the previous lecture (P435 Lect. Notes 2, p.15) by use of Stokes’ Theorem, (for electrostatics) that: ∫ ∇ × E ( r )idA = ∫ E ( r )id = 0 ...
... We saw in the previous lecture (P435 Lect. Notes 2, p.15) by use of Stokes’ Theorem, (for electrostatics) that: ∫ ∇ × E ( r )idA = ∫ E ( r )id = 0 ...
TOTAL HW STATS
... c) (max 10; avg 4.90, median 6, stddev 4.17) In both of the above limits, explain how Griffiths' "boundary condition" (page 178) Eq 4.26 and 4.28 work out near the top end of the rod. Also (just briefly, very qualitatively, e.g. simply in terms of signs or directions of these fields) explain how bou ...
... c) (max 10; avg 4.90, median 6, stddev 4.17) In both of the above limits, explain how Griffiths' "boundary condition" (page 178) Eq 4.26 and 4.28 work out near the top end of the rod. Also (just briefly, very qualitatively, e.g. simply in terms of signs or directions of these fields) explain how bou ...
Electric Potential and Energy
... An infinite wire is placed on the z-axis and homogeneously charged with linear charge density λ. An electric dipole p~ = pb y is positioned at (x, 0, 0). 1. What is the torque acting on the dipole? 2. What is the energy of the dipole in the field of the wire? 3. What is the energy of the wire in the ...
... An infinite wire is placed on the z-axis and homogeneously charged with linear charge density λ. An electric dipole p~ = pb y is positioned at (x, 0, 0). 1. What is the torque acting on the dipole? 2. What is the energy of the dipole in the field of the wire? 3. What is the energy of the wire in the ...
Introducing Faraday`s Law - United States Naval Academy
... because Equation 2 can be interpreted to mean that the electric field circulates even for the case of a purely motional emf in a static magnetic field (see Equation 9a). However, the electric field circulates only in the case of induction. Note that we are restricting our attention to emfs associate ...
... because Equation 2 can be interpreted to mean that the electric field circulates even for the case of a purely motional emf in a static magnetic field (see Equation 9a). However, the electric field circulates only in the case of induction. Note that we are restricting our attention to emfs associate ...
common_physics_mistakes
... EMF E. Electromotive force is not the same concept as electric field. Heck, they don’t even have the same units! Chapter 20 Right hand rule! (Don’t use your left hand). The force on a negative charge is opposite the direction of the force on a positive charge. Chapter 21 (change in flux ...
... EMF E. Electromotive force is not the same concept as electric field. Heck, they don’t even have the same units! Chapter 20 Right hand rule! (Don’t use your left hand). The force on a negative charge is opposite the direction of the force on a positive charge. Chapter 21 (change in flux ...
Electromagnetism - Sterling Public Schools
... The intensity or strength of an electric or magnetic field can be determined by the lines representing it. The field intensity is proportional to the number of lines of force per unit area normal to the field. High intensity is represented by lines drawn close together, low intensity is represented ...
... The intensity or strength of an electric or magnetic field can be determined by the lines representing it. The field intensity is proportional to the number of lines of force per unit area normal to the field. High intensity is represented by lines drawn close together, low intensity is represented ...
2013
... b) A charge of QA = -60 µC is placed at A(0,0,4) and a charge of QB = 100 µC is placed at B(0,3,4) in free space. If distance are in meters. Find the distance between AB. Find the force exerted on QA by QB if 0 8 854 10 12 f / m 2. a) State and explain Laplace’s law for electrostatic fields. ...
... b) A charge of QA = -60 µC is placed at A(0,0,4) and a charge of QB = 100 µC is placed at B(0,3,4) in free space. If distance are in meters. Find the distance between AB. Find the force exerted on QA by QB if 0 8 854 10 12 f / m 2. a) State and explain Laplace’s law for electrostatic fields. ...
dimensions and kinematics in
... 19. Two spherical bodies of mass M and 5M and radii R and 2R respectively are released in free space with initial separation between their centres equal to 12R. If they attract each other due to gravitational force only, then the distance covered by the smaller body just before collision is : (a) 2 ...
... 19. Two spherical bodies of mass M and 5M and radii R and 2R respectively are released in free space with initial separation between their centres equal to 12R. If they attract each other due to gravitational force only, then the distance covered by the smaller body just before collision is : (a) 2 ...
File
... Motors use electromagnets Because magnetism is a ______________, magnets can be used to ______________________. Electric motors _______________ the ________________ of an electric current into ________________ by taking advantage of the _______________________ between ____________ and ______________ ...
... Motors use electromagnets Because magnetism is a ______________, magnets can be used to ______________________. Electric motors _______________ the ________________ of an electric current into ________________ by taking advantage of the _______________________ between ____________ and ______________ ...
Module 11: The vector nature of electromagnetic radiation
... The oscillating components of the electric field along the y and z have the same frequency and wavelength and the z component is lagging with a phase π/3. (Ans: Left elliptically polarized and the major axis is making an angle π/4 with the y axis.) 3. Find the state of polarization of a light which ...
... The oscillating components of the electric field along the y and z have the same frequency and wavelength and the z component is lagging with a phase π/3. (Ans: Left elliptically polarized and the major axis is making an angle π/4 with the y axis.) 3. Find the state of polarization of a light which ...
Electrostatics
Electrostatics is a branch of physics that deals with the phenomena and properties of stationary or slow-moving electric charges with no acceleration.Since classical physics, it has been known that some materials such as amber attract lightweight particles after rubbing. The Greek word for amber, ήλεκτρον electron, was the source of the word 'electricity'. Electrostatic phenomena arise from the forces that electric charges exert on each other. Such forces are described by Coulomb's law.Even though electrostatically induced forces seem to be rather weak, the electrostatic force between e.g. an electron and a proton, that together make up a hydrogen atom, is about 36 orders of magnitude stronger than the gravitational force acting between them.There are many examples of electrostatic phenomena, from those as simple as the attraction of the plastic wrap to your hand after you remove it from a package, and the attraction of paper to a charged scale, to the apparently spontaneous explosion of grain silos, the damage of electronic components during manufacturing, and the operation of photocopiers. Electrostatics involves the buildup of charge on the surface of objects due to contact with other surfaces. Although charge exchange happens whenever any two surfaces contact and separate, the effects of charge exchange are usually only noticed when at least one of the surfaces has a high resistance to electrical flow. This is because the charges that transfer to or from the highly resistive surface are more or less trapped there for a long enough time for their effects to be observed. These charges then remain on the object until they either bleed off to ground or are quickly neutralized by a discharge: e.g., the familiar phenomenon of a static 'shock' is caused by the neutralization of charge built up in the body from contact with insulated surfaces.