Asked by Tri

A student thrusts a 0,20T magnet with a cross sectional area of 2.0 cm^2 into a coil of 400 turns in 0,50s. The coil has a resistance of 30 ohms and it is connected in series with a moving coil meter having a resistantace of 170 ohms. What is the average velocity and the current?
Answered by bobpursley
Figure the induced voltage (Faradays law)
EMf=N *B*A/time

Then divide this induced EMF by total resistance to get current.

http://physics.bu.edu/~duffy/PY106/InducedEMF.html
Answered by Tri
EMF = BLV i don't have the length but im trying to find the velocity?
Answered by bobpursley
go back to my formula. It is the basis for yours.
There are no AI answers yet. The ability to request AI answers is coming soon!