EM induction
... •An electric current is called an alternating current if the charge flows in one direction then changes to flow in the opposite direction. •When looking at a diagram it is important to see if the line goes both above and below the zero line. ...
... •An electric current is called an alternating current if the charge flows in one direction then changes to flow in the opposite direction. •When looking at a diagram it is important to see if the line goes both above and below the zero line. ...
What is a Magnet?
... Is a nail wrapped in a coil of wire magnetic? Test it by trying to pick up paper clips: YES / NO Is the coil of wire alone magnetic? Test it and see: YES / NO Is the coil of wire connected to the battery magnetic? Test it, and see: YES / NO How many paper clips are you able to pick up? ...
... Is a nail wrapped in a coil of wire magnetic? Test it by trying to pick up paper clips: YES / NO Is the coil of wire alone magnetic? Test it and see: YES / NO Is the coil of wire connected to the battery magnetic? Test it, and see: YES / NO How many paper clips are you able to pick up? ...
Pendahuluan Mesin Elektrik / Mesin Elektrik Secara Am
... Electric motors are used to operate washing machines, elevators, cranes etc while electric generators are used to generate electricity for power generation and alternator for charging car battery. ...
... Electric motors are used to operate washing machines, elevators, cranes etc while electric generators are used to generate electricity for power generation and alternator for charging car battery. ...
Motion of charged particles in B *Code: 27L1A009, Total marks: 1
... semicircular path in terms of m, v, Q and B. (2 marks) (b) Briefly describe how the set up can be used to identify nuclei of different isotopes of the same element. State the assumption you have made. (3 marks) (c) Another nucleus of a heavier isotope of the same element is projected into the field ...
... semicircular path in terms of m, v, Q and B. (2 marks) (b) Briefly describe how the set up can be used to identify nuclei of different isotopes of the same element. State the assumption you have made. (3 marks) (c) Another nucleus of a heavier isotope of the same element is projected into the field ...
The field concepts of Faraday and Maxwell
... method which we adopt to represent themere forces, provided no erroris thereby introduced, On the contrary, when the natural truth and the conventional representation of it most closely agree, then are we most advanced in our knowledge. The emission and the ether theories present such cases in rela ...
... method which we adopt to represent themere forces, provided no erroris thereby introduced, On the contrary, when the natural truth and the conventional representation of it most closely agree, then are we most advanced in our knowledge. The emission and the ether theories present such cases in rela ...
MAGNETIC FIELDS AND FORCES
... A closely-wound rectangular coil of 50 turns has dimensions of 12.0 cm × 25.0 cm. The plane of the coil is rotated in time t = 0.100 s from a position where it makes an angle of 60.0° with a uniform magnetic field of strength 2.00 T to a position perpendicular to the field. What is the average emf i ...
... A closely-wound rectangular coil of 50 turns has dimensions of 12.0 cm × 25.0 cm. The plane of the coil is rotated in time t = 0.100 s from a position where it makes an angle of 60.0° with a uniform magnetic field of strength 2.00 T to a position perpendicular to the field. What is the average emf i ...
E_M_3_teachers
... This is called induced magnetism. The direction of the magnetic field will depend on the direction of the current flow, which in turn depends on the battery connections, and the placement of the wire with respect to the nail. This effect can be subtle if using D cell batteries, so just noting a defl ...
... This is called induced magnetism. The direction of the magnetic field will depend on the direction of the current flow, which in turn depends on the battery connections, and the placement of the wire with respect to the nail. This effect can be subtle if using D cell batteries, so just noting a defl ...
Mag & e-mag power point
... Why poles are called north and south A magnet suspended so that it can rotate freely horizontally will eventually settle down with one pole facing north and the other south. This is pole is therefore called the ‘north seeking pole’, usually shortened to just ‘north pole’. ...
... Why poles are called north and south A magnet suspended so that it can rotate freely horizontally will eventually settle down with one pole facing north and the other south. This is pole is therefore called the ‘north seeking pole’, usually shortened to just ‘north pole’. ...
Document
... The electric force acts on a charged particle regardless of whether the particle is moving, whereas the magnetic force acts on a charged particle only when the particle is in motion. The electric force does work in displacing a charged particle, whereas the magnetic force associated with a steady ma ...
... The electric force acts on a charged particle regardless of whether the particle is moving, whereas the magnetic force acts on a charged particle only when the particle is in motion. The electric force does work in displacing a charged particle, whereas the magnetic force associated with a steady ma ...
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.