2008年7月16日 · The real definition of magnetic flux, which is valid for every surface and in every case, is: which means that you have to sum (integral) the contributes of the perpendicular (normal) component of B in every point of the surface A.

2005年4月3日 · Magnetic flux = B*A you can differentiate this equation with respect to time to find the rate of change of flux, and relate dA/dt to the information given in the question.

2017年1月17日 · In summary, the general method for finding the total magnetic flux through an object is by using the formula Φ =∫B*ds (dot product). The surface over which the integral is taken depends on the specific object and the magnetic field present. In the case of a toroid, the surface is between the inner and outer radii, and the magnetic field is µ0NI/2πr. The term ds, which …

2007年3月21日 · In summary, the conversation discusses finding the total magnetic flux through a cylinder with a current-carrying wire along its axis. The equations for flux and magnetic field are given, and the attempt at solving for B and A are shown.

2010年3月1日 · In summary, magnetic flux density is a vector, measured in webers per square metre (or teslas), and exists at each point. Magnetic flux is measured in volt-seconds, and magnetic flux density is what physicists more commonly call the magnetic field.

2010年11月14日 · Hi there, You know how magnetic flux through a loop of area A is the integral of B dot dA? If the area is perpendicular to the magnetic field, then we can write the dot product as B dA cos 0 = b dA. Also, if the magnetic field is uniform, the B can be brought out of the integral sign, and...

2008年1月17日 · In summary, the magnetic flux through a closed surface is always zero due to the fact that magnetic monopoles do not exist. This is one of Maxwell's equations and is in contrast to Gauss's law for electric fields. In the case of stationary fields, the magnetic flux is definitely zero. Even in the case of non-stationary fields, the flux remains zero due to the same …

2018年4月9日 · I understand that magnetic flux density is measured in Teslas or Weber’s per square meter and that voltage or emf is measured using faraday’s law of induction which is E= - N dφ/dt Where N= number parallel fields Φ = magnetic flux (Wb) E= emf (V) What I don’t understand is the time function...

Engineering Electrical Engineering Electrical Engineering questions and answers A magnetic flux \ ( \Phi=75 \times 10^ {-3} \mathrm {~W} \) bis flowing through a magnetic circuit. The reluctance of the circuit is \ ( R=20 \mathrm {kA} / \mathrm {Wb} \).1. Determine the magnetomotive force created by the flux.2. A solenoid of 500 turn of coil is wound around the magnetic …

2014年7月9日 · In summary, the magnetic flux exiting a cube refers to the amount of magnetic field passing through the surface of the cube. It is a measure of the total magnetic field strength in a given area, and is usually represented by the symbol Φ.