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In a magnetic field of 400A per m, the relative permeability of a piece of soft iron is 3000.Find the magnetic induction in the iron at this field strength?


Calculate the diamagnetic susceptibility of copper assuming that an atom of

copper contributes only one electron and the mean square distance of

electronic distribution from the nucleus is equal to the radius of monovalent

copper ion. The lattice constant of copper is 3.61 Å and the radius of Cu+

is

0.96 Å.


Question no 01) Calculate the magnetic induction B and flux Φ at the center of a toroidal 

solenoid with mean circumference of 50 cm and a cross-sectional area of 200 

mm2

, wound with 800 turns of wire carrying 1.0 A, (1) when the solenoid has 

an air core and (2) when the solenoid has a soft iron core of relative 

permeability 1000.


Two point charges are located on the y-axis of a  coordinate system: q1 = −3.0 nC is at y = −2.0 cm, and q2 = 1.0 nC is at y = −4.0 cm. What is the total electric force exerted by q1 and q2 on a charge q3 = 5.0 nC at y = 0?


Convert the vector A = xy ax - 2x ay to cylindrical system.



Convert the vector A = xy ax - 2x ay to cylindrical system.


If vector A= 10ax-4ay-6az, find the component vector of A along ay, magnitude of 5A-B, and a unit vector along 3A+2B. Vector B = 2 ax + ay


Find the gradient of a scalar function of position V where V (x, y, z) = x2y2 + ez, Calculate the magnitude of gradient at point P(1,5,-2)


A radio set is retuned from the 108MHz to 90.5MHz station using the variable capacitor.By what factor is the capacitance changed


In the figure particle 1 of charge q1 = -5.34q and particle 2 of charge q2 = +1.84q are fixed to an x axis. As a multiple of distance L, at what coordinate on the axis is the net electric field of the particles zero?


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