posted by Tri on .
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?
Figure the induced voltage (Faradays law)
Then divide this induced EMF by total resistance to get current.
EMF = BLV i don't have the length but im trying to find the velocity?
go back to my formula. It is the basis for yours.