UNIT : 3 ELECTROMAGNETIC INDUCTION & AC CIRCUITS
... 9.A resting electron near a stationery bar magnet does not set into motion. But a moving magnet near an electron set it into motion. Why? 10.An irreqularly shaped flexible current carrying loop when placed In an external magnetic field will assume a circular shape. Give reason 11.Three identical ind ...
... 9.A resting electron near a stationery bar magnet does not set into motion. But a moving magnet near an electron set it into motion. Why? 10.An irreqularly shaped flexible current carrying loop when placed In an external magnetic field will assume a circular shape. Give reason 11.Three identical ind ...
Lecture Notes
... currents in a variety of geometries (straight wire, wire loop, solenoid coil, toroid coil).We will also determine the force between two parallel, current-carrying conductors. We will then use this force to define the SI ...
... currents in a variety of geometries (straight wire, wire loop, solenoid coil, toroid coil).We will also determine the force between two parallel, current-carrying conductors. We will then use this force to define the SI ...
The Thomas precession factor in spin–orbit interaction
... istic QM course, the instructor is likely compelled to use an unsatisfactory ‘‘it can be shown that’’ argument, which is, in fact, the approach taken in most textbooks. In my own 1994 textbook,4 I tried to go beyond that approach by considering the case where the electron is forced to move along a s ...
... istic QM course, the instructor is likely compelled to use an unsatisfactory ‘‘it can be shown that’’ argument, which is, in fact, the approach taken in most textbooks. In my own 1994 textbook,4 I tried to go beyond that approach by considering the case where the electron is forced to move along a s ...
Document
... 1. Where is the magnitude of the magnetic field around a permanent magnet greatest? a. The magnitude is greatest close to the poles. b. The magnitude is greatest far from the poles. c. The magnitude is equal at all points on the field. d. The magnitude is greatest halfway between poles. 2. One usefu ...
... 1. Where is the magnitude of the magnetic field around a permanent magnet greatest? a. The magnitude is greatest close to the poles. b. The magnitude is greatest far from the poles. c. The magnitude is equal at all points on the field. d. The magnitude is greatest halfway between poles. 2. One usefu ...
PHYSICS 7
... the earth’s magnetic field, whose magnitude is 5.10 X 10-5 Tesla. If the motion is perpendicular to the magnetic field, what motional emf is developed across the wire? Ans: 7750 volts 9 A copper wire is formed into a circular loop whose radius is 8.29 cm. The loop of wire is lying flat on an incline ...
... the earth’s magnetic field, whose magnitude is 5.10 X 10-5 Tesla. If the motion is perpendicular to the magnetic field, what motional emf is developed across the wire? Ans: 7750 volts 9 A copper wire is formed into a circular loop whose radius is 8.29 cm. The loop of wire is lying flat on an incline ...
The Magnetic Field of a Permanent Magnet
... spot inside the rod facing along the meter stick in the direction of increasing distance. Carefully measure the location of the sensor on the meter stick. This will be your origin for all distance measurements. 2. As a convenient way to measure to the center of the magnet, and to ease handling of th ...
... spot inside the rod facing along the meter stick in the direction of increasing distance. Carefully measure the location of the sensor on the meter stick. This will be your origin for all distance measurements. 2. As a convenient way to measure to the center of the magnet, and to ease handling of th ...
Magnetic field
A magnetic field is the magnetic effect of electric currents and magnetic materials. The magnetic field at any given point is specified by both a direction and a magnitude (or strength); as such it is a vector field. The term is used for two distinct but closely related fields denoted by the symbols B and H, where H is measured in units of amperes per meter (symbol: A·m−1 or A/m) in the SI. B is measured in teslas (symbol:T) and newtons per meter per ampere (symbol: N·m−1·A−1 or N/(m·A)) in the SI. B is most commonly defined in terms of the Lorentz force it exerts on moving electric charges.Magnetic fields can be produced by moving electric charges and the intrinsic magnetic moments of elementary particles associated with a fundamental quantum property, their spin. In special relativity, electric and magnetic fields are two interrelated aspects of a single object, called the electromagnetic tensor; the split of this tensor into electric and magnetic fields depends on the relative velocity of the observer and charge. In quantum physics, the electromagnetic field is quantized and electromagnetic interactions result from the exchange of photons.In everyday life, magnetic fields are most often encountered as a force created by permanent magnets, which pull on ferromagnetic materials such as iron, cobalt, or nickel, and attract or repel other magnets. Magnetic fields are widely used throughout modern technology, particularly in electrical engineering and electromechanics. The Earth produces its own magnetic field, which is important in navigation, and it shields the Earth's atmosphere from solar wind. Rotating magnetic fields are used in both electric motors and generators. Magnetic forces give information about the charge carriers in a material through the Hall effect. The interaction of magnetic fields in electric devices such as transformers is studied in the discipline of magnetic circuits.