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Magnetic flux formula confusion - Physics Forums
Jul 17, 2008 · The real definition of magnetic flux, which is valid for every surface and in every case, is: [tex]\Phi = \int_A B_n dA[/tex] which means that you have to sum (integral) the contributes of the perpendicular (normal) component of B in every point of the surface A.
Why a magnetic flux in closed surface area is always 0? - Physics …
Jan 17, 2008 · 0 magnetic flux, is 0 times the magnetic field is perpendicular to the area or what? As I know Gauss' law for Magnetism is different for electric fields. In case of electric fields, it is not zero.
Magnetic flux density vs magnetic flux - Physics Forums
Mar 1, 2010 · Magnetic flux, Φ, is a scalar, measured in webers (or volt-seconds), and is a total amount measured across a surface (ie, you don't have flux at a point). Magnetic flux density, B, is a vector, measured in webers per square metre (or teslas), and exists at each point. The flux across a surface S is the integral of the magnetic flux density ...
Magnetic flux with non-uniform magnetic field - Physics Forums
Nov 14, 2010 · 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 then the integral is just dA which is A. Thus, if the magnetic field is uniform and the area is perpendicular to the loop, the magnetic flux is ...
Magnetic Flux through a Cylinder - Physics Forums
Mar 21, 2007 · The magnetic flux lines using the Right Hand Fist/Grip/Screw Rule ... circle around the wire perpendicular to the direction of the current. Since Flux is B dot A = B A cos theta, since theta is 90 degrees, the flux thru the cylinder is zero, 0. ...Theta is the angle between the normal to the surface and the flux lines of B = 90 degrees.
How to calculate magnetic flux from voltage? - Physics Forums
Apr 9, 2018 · 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 of the formula.
Magnetic flux through a solenoid - Physics Forums
Mar 30, 2010 · so why for the entire solenoid flux, it is now nL*the flux above? where L = length of solenoid shouldn't multiplying it with just n = number of rings be suffice? also, i don't really understand the magnetic flux. is it define to be the number of field lines per unit area? it is something like density right? so shouldn't it be flux = B/A ? i am ...
Shielding a wire from magnetic flux - Physics Forums
Feb 20, 2019 · If there is no change in the magnetic flux and the wire does not move then there will not be an induced voltage. However: If both of the above conditions are NOT met, there will be at least some circulating current in the conductor, but depending on the specifics, that tiny current and any consequent voltage may be small enough for you to ignore.
What does the magnetic flux depend on? - Physics Forums
Jun 10, 2016 · Does the magnetic flux depend on the shape of the surface or on the enclosed current? Or both or neither? Homework Equations-The Attempt at a Solution I have no clue. I guess a change in the enclosed current is a change in the field and thus a change in the flux, but I have my doubts about this reasoning. Thanks very much for your help!
Magnetic Flux Through a Square Loop - Physics Forums
Mar 4, 2017 · A loop of wire in the form of a square 1.50 m on each side, its plane makes an angle of 40.0° with a uniform magnetic field of 0.95 T. What is the magnetic flux through the loop? Homework Equations Φ = BAcosθ A = s^2 The Attempt at a Solution I found the area of the square using A = s^2 which returns 2.25m.