Physics 241 – Exam #2
... 3. Four wires, each of length L = 2.5 m, are connected to form a square metal loop as shown. Each wire has a resistance R = 750 Ω. A magnetic field of magnitude B is directed perpendicular to the plane of the loop, and into the plane of the drawing. This field varies with time as B = 0.65 − 1.5t wh ...
... 3. Four wires, each of length L = 2.5 m, are connected to form a square metal loop as shown. Each wire has a resistance R = 750 Ω. A magnetic field of magnitude B is directed perpendicular to the plane of the loop, and into the plane of the drawing. This field varies with time as B = 0.65 − 1.5t wh ...
Lecture 5
... illustration below shows this wave an some instant in time. Points A, B, and C have the same z coordinate. Compare the magnitudes of the electric field at points A and B. A. Ea < Eb B. Ea = Eb C. Ea > Eb E E0 sin (kz wt): E depends only on z coordinate for constant t. z coordinate is same for A, ...
... illustration below shows this wave an some instant in time. Points A, B, and C have the same z coordinate. Compare the magnitudes of the electric field at points A and B. A. Ea < Eb B. Ea = Eb C. Ea > Eb E E0 sin (kz wt): E depends only on z coordinate for constant t. z coordinate is same for A, ...
exam2_2006
... 22. A positively charged particle is moving in a magnetic field. What is the angle between the velocity of the charge and the direction of the magnetic field if the magnetic force on the particle is zero? A) 90° B) 45° C) 30° D) 0 E) Magnetic force can not be zero if the speed of the particle and th ...
... 22. A positively charged particle is moving in a magnetic field. What is the angle between the velocity of the charge and the direction of the magnetic field if the magnetic force on the particle is zero? A) 90° B) 45° C) 30° D) 0 E) Magnetic force can not be zero if the speed of the particle and th ...
From Physics 212, one might get the impression that going... vacuum to electrostatics in a material is equivalent to replacing...
... argument based on bound charges. The polarization density is proportional to the total electric field with proportionality constant given by the product of the electric susceptibility chi and epsilon_0. Since the electric field is constant, its divergence is zero and hence there is no bound charge v ...
... argument based on bound charges. The polarization density is proportional to the total electric field with proportionality constant given by the product of the electric susceptibility chi and epsilon_0. Since the electric field is constant, its divergence is zero and hence there is no bound charge v ...
Example
... dE 2R 2 , where r is the vector from dq to P and r r . Note that the x-components and the 40 r r y-components of the electric field intensity due to charge elements dq on opposite sides of the ring will cancel because they are of equal magnitude, but opposite in direction. Hence the net elect ...
... dE 2R 2 , where r is the vector from dq to P and r r . Note that the x-components and the 40 r r y-components of the electric field intensity due to charge elements dq on opposite sides of the ring will cancel because they are of equal magnitude, but opposite in direction. Hence the net elect ...
V - Erwin Sitompul
... Since the potential field information is more likely to be determined first, let us describe the direction of ΔL (which leads to a maximum increase in potential) in term of potential field. Let aN be a unit vector normal to the equipotential surface and directed toward the higher potential. Th ...
... Since the potential field information is more likely to be determined first, let us describe the direction of ΔL (which leads to a maximum increase in potential) in term of potential field. Let aN be a unit vector normal to the equipotential surface and directed toward the higher potential. Th ...
Датчик магнитного поля на основе сэндви
... coils and conducting lines that are used to generate magnetic field suffer from energy losses, that cause the progressive damage of the metal conductors [1]. The alternative approach of magnetic writing such as spin-current induced domain wall motion was proposed [2]. However the spin transfer also ...
... coils and conducting lines that are used to generate magnetic field suffer from energy losses, that cause the progressive damage of the metal conductors [1]. The alternative approach of magnetic writing such as spin-current induced domain wall motion was proposed [2]. However the spin transfer also ...
Physics-part2 - National University
... Environment: Introduction components of environment, factors affecting environment, environmental management, environment and health, environmental chemistry, segments of environment – atmosphere hydrosphere, lithosphere and biosphere, structure of atmosphere. Pollution and Pollutants: Pollution, en ...
... Environment: Introduction components of environment, factors affecting environment, environmental management, environment and health, environmental chemistry, segments of environment – atmosphere hydrosphere, lithosphere and biosphere, structure of atmosphere. Pollution and Pollutants: Pollution, en ...
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.