so the angle is not involved to the equation
and the equation that i should use is
emf = NA*(the change in magnetic field) / (the change in time)
= (25 * 0.785 * 100*10^-6) / 2
am i on the right track this time
i am using the faraday's law of induction
induced emf = -N (d/dt) (magnetic flux)
the magnetic flux through the loop of area is
magnetic flux = BA cos__ (the degree between the magnetic field and the loop of area)
then induced emf = -N (d/dt) (BAcos__)
average emf is it same as induced emf??
Q: a 25-turn circular coil of wire has diameter 1.00m. it is placed with its axis along the direction of the earth'smagneticfield of 50.o uT, and then in 0.200s it is flipped 180 degrees. an average emf of what magnitude is generated in the coil?
N =...