12/28/2023 0 Comments Magnetic flux through a loopCalculate the magnetic flux at the surface.ĭimensions of rectangular loop = 0.50m and 0.60m,Ī perpendicular field of force of magnitude 0.1 T is applied to an oblong loop with dimensions of three cm by 5 cm. The values of B are 0.02T and 45°, respectively. So, the induced emf in the coil is maximum when cosθ is maximum or θ is zero means when the plane of the coil is parallel to the field.Ī rectangular loop has dimensions of 0.50m and 0.60m. Where θ is the angle between the plane of the coil and the lines of force. So, when rectangular coil is rotated in a uniform magnetic field about an axis passing through its centre and perpendicular to the direction of the field, then the induced voltage in the coil = dtdϕ ⇒ e.m.f= dϕ When the coil is rotated between the pole pieces of a magnet as shown, how often will the magnetic flux linked with the coil be maximum and minimum during one complete rotation of the coil?Īns: According to Faraday's law when the magnetic flux linking a circuit changes, an electromotive force is induced in the circuit proportional to the rate of change of the flux linkage. The term used to describe this measurement is known as magnetic flux. The measurement of the quantity of the magnetic force experienced by any object is measured by the magnetic lines of force entering and exiting it. The quality of magnetic property of such a magnet depends on the number of magnetic lines of force passing through this object that originate from the actual magnet. When a ferrous object is brought near a magnetic object then it also behaves like a magnet. These magnetic lines originate from the north pole of the magnets and end at the south pole of the magnet completing a closed circuit through the body of the magnet. The magnetic force of any normal magnet or an electromagnet can be represented by magnetic lines. The north pole and south pole of this type of magnet can be easily identified by the use of a compass. And if the wire is turned in a form of spring or selenium and electric current is passed through it then the spring behaves like an actual magnet. In later days it also has been discovered that the electric when passing through a metal wire also possesses characteristics of magnetism in it. One pole is known as the north pole and the other is the south pole. Later when the characteristics of a magnet were discovered it was found that in the magnet there exist two poles at both ends. Chromium and Nickel are the other two objects that are attracted to magnets. It is a material that attracts iron or ferrous objects. Magnetic Properties of Electricity flowing through a WireĪs a child, you must all have played with a magnet. When the coil is rotated between the pole pieces of a magnet as shown, during one complete rotation of the coil, how often will the magnetic flux linked with the coil be maximum and minimum? Mathematically, the magnetic flux formula is as follows: Magnetic flux is denoted by ΦB where B represents magnetic field, and its unit is tesla-meter2 or weber (Wb). It is calculated as the product of the average magnetic field strength and the perpendicular area it penetrates. Magnetic flux refers to the total number of magnetic field lines penetrating any surface placed perpendicular to the magnetic field. The magnetic flux value could be a vector quantity that depends on the flux direction. Magnetic flux is represented by the symbol B, where B could be a field and therefore the unit is Weber (Wb). It's the component of the flux that passes through the coil that's shared by all.
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