Faraday's Law Help - Find Answers Here!

[matthewgill]

Hello,

I have found this information on the internet, but just need a few parts explained:

http://hyperphysics.phy-astr.gsu.edu/Hbase/electric/farlaw.html

For the 'magnet moving into coil' (lower left illustration),where it says ^B/^t=0.4T/s (where '^' is the triangular symbol in the illustration) what do i have to replace the '^B' and '^t' with for my own equasion?

Thank you

 

[spidey]

Hello,

I have found this information on the internet, but just need a few parts explained:

http://hyperphysics.phy-astr.gsu.edu/Hbase/electric/farlaw.html

For the 'magnet moving into coil' (lower left illustration),where it says ^B/^t=0.4T/s (where '^' is the triangular symbol in the illustration) what do i have to replace the '^B' and '^t' with for my own equasion?

Thank you

"^" is nothing but the change..^ can be replaced with "d" differentiation. To explain with other example, velocity is the change in distance w.r.t time.
i.e. velocity = final distance - initial distance/time taken
which can be written as velocity = dl/dt where dl is the change in distance ...

The same applies for faraday's law
^B/^t = d(BA)/dt= change in magnetic flux w.r.t. time..where B is magnetic field and A is area

For more details see
http://en.wikipedia.org/wiki/Electromagnetic_induction

 

[astrokreng]

for your question. In Faraday's Law, the symbol '^B' represents the change in magnetic field strength and '^t' represents the change in time. So for your own equation, you would need to measure the change in magnetic field strength and the change in time for the specific situation you are studying. Once you have those values, you can substitute them into the equation ^B/^t=0.4T/s to find the induced electric field. I hope this helps clarify the equation for you.