Consider a point source emitting 10^12 neutrons/s in a vacuum. Calculate the flux and the current at a distance of 1 m from the source.

Solution Preview

Hello and thank you for posting your question to Brainmass!

Flux is the amount of particles per second per unit area.
Since we have a point source, we can assume that the neutrons are emitted isotropically,
That is, their density on a spherical shell around the source is constant.

The surface area of a spherical shell is:

S = 4(pi)r^2

And in our case r = lm, ...

Solution Summary

The solution is attached below in two files. The files are identical in content, only differ in format. The first is in MS Word XP Format, while the other is in Adobe pdf format. Therefore, you can choose the format that is most suitable to you.

... to the surface of loop B in any case the net magnetic flux through loop B is zero hence the rate of change of flux and the induced current in loop B will be ...

... Hence,. T = K1IFIA where K1 is a constant (4). Further, back EMF EB is proportional to flux (ie field current) and speed N. Hence,. EB = K2IFN (5). ...

... field due to linking with the coil will oppose the reduction in the magnetic flux. Hence, direction of the magnetic field due to the induced current will be in ...

... 5- Lenz's Law states that the induced current always leads to a magnetic field that OPPOSES the change in magnetic flux. Please see the attached. ...

... out thumb points in the direction of current flow, then the ... Net average magnetic flux through the loop is the difference between the average fluxes due to ...

... (a) Draw a diagram of the coil, and indicate the direction of rotation, and of the current flow, the magnetic flux, the emf and the force exerted by the ...

... the loop e is given by the rate of change of magnetic flux and thus is given as. (negative sign is according to Lenz law gives the direction of induced current) ...

... eg the substitution method where we express all currents in terms ... right angles to a magnetic field of flux density 0.6 T, calculate the current flowing in ...