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Two point charges q1=+ 3.2 nC and q2= -5.3 nC are 0.2 m apart. Point A is midway between them; point B is 0.09 m from q1 and 0.07 from q2. Take the electric potential to be zero at infinity. Find (a) the potential at point A (b) the potential at point B (c) the work done by the electric field on a charge of 3.5 nC that travels from point A to point B.

A circular coil is carrying current in clockwise direction. A charged particle is crossing the circular coil exactly along the axis of the circular coil. Will the velocity of charged particle change?


calculate the electric field at point p using a ring of uniform negative charges at a distance y from the center point p.
A magnetic field in a region of space produced by a long straight wire
carrying a current I has the form

A spherical shell, with inside radius R1 and outside radius R2, is uniformly magnetized in the direction of the z- axis. The magnetization in the shell is Mo = Mok. Find the scalar potential

ΙΈ* for points on the z-axis, both inside and outside the shell


Consider a one-dimensional infinite square well with N particles. Given that all particles occupy the ground state, calculate the total energy of the system. Now assume that each energy level can hold no more than two particles. Calculate the energy of the ground state of the system and the maximum particle energy called the Fermi energy. Find an expression for the density of states for the infinite square well.
A magnetic field in a region of space produced by a long straight wire
carrying a current I has the form
Two positive charges of equal magnitude 10 nC are separated by a distance of 10 em. What is the
total force due to these two charges on a 0.5 nC test charge placed midway between them?

A magnetic field in a region of space produced by a long straight wire carrying a current I has the form 𝑩 = πœ‡0𝐼 2πœ‹π‘Ÿ 𝝋̂ , where r is the perpendicular distance from the z-axis and 𝝋 is a unit vector in the circumferential direction. A test wire is positioned in the magnetic field at a distance r and carries a current flowing in the positive z-direction. If the test wire has length L, calculate the force on the wire using the Lorentz force formula.


The question are in the file below :

https://docs.google.com/document/d/18il4YSLszblapnoBdtDazphcqTUiVbylaZrHcJxaVkg/edit


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