Recent content by kihr

One more thing. With a higher doping level the drift current should go up due to the higher electric field at the junction, and the diffusion current should go down due to the same reason. The net effect should be that the equilibrium condition would be attained faster in this case than if the...

The concentration of ions goes up with increase in the doping level. Does this, therefore, imply that the width of the depletion region will increase for higher doping levels? It looks as if my initial thinking was not right.

Homework Statement The problem is what would be the effect on the width of the depletion region of an unbiased PN junction on the doping levels of the P and N sides Homework Equations This is a conceptual question. There is no equation involved. The Attempt at a Solution Increase...

The mass number alone does not give an indication of the charge. The problem does not state the atomic numbers. Had this been given the question of my doubt would not have arisen. Looking forward to further inputs from you. Thanks.

Homework Statement An alpha particle is bombarded on 14 N. As a result a 17 O nucleus is formed, and a particle is emitted. This particle is a: (a) neutron (b) proton...

Going by the BEPN versus A (mass number) graph, in the case of fission (to which this problem appears to relate) the BEPN for the fission products is less than that of the parent nucleus. If this logic is to be applied A > B should be the correct answer. However, I understand that it is to be...

OK. Let me try out the way you have suggested.

Yes I do understand that in this case there would be a generation of energy because of the difference in rest masses between the parent and daughters. Also I am aware that energy would be conserved, and that this information would help in finding out, for instance, the kinetic energy of the two...

Homework Statement A nucleus of mass M + m1 is at rest and decays into two daughter nuclei of equal mass M/2 each. The binding energy per nucleon for the parent nucleus is A and that for the daughter nucleus is B. Which is greater A or B? Homework Equations Binding energy per nucleon=...

Yes. Could you please explain as to how to calculate the Coulomb force on q by q1 when the shell intervenes between the two? Do we have a situation of induction of a charge -q1 on the outer surface of the sphere, and a charge of +q1 on its inner surface due to induction? If this becomes clear...

Yes, but how to find out the directions of the field inside the shell due to the charge on the shell and also due to q1. I am still confused!

I would request for more elaboration on the concept of the net flux due to an external charge being zero, and also why there would be an electric field inside the sphere due to the charge q1. I took the electric field inside the sphere due to the charge on the sphere to be zero as I assumed...

Homework Statement A thin metallic spherical shell contains a charge Q on it. A point charge q is placed at the centre of the shell and another charge q1 is placed outside it. All the three charges are positive. Find (a) the direction of the force on the charge at the centre, and (b) the...

Homework Statement Two capacitors, one with C1=2pF and V1=30V, and the other with C2=3pF and V2=20V are connected to each other through a switch (positive end of one connected to the negative end of the other). The other end of each capacitor is kept open. What happens to V1 and V2when the...

By your method I don't get the answer given in the book. I guess either the answer given in the book is incorrect, or the approach to the solution may require a re-look.