r=4см
B=0,04тл
V=50гц
a=60°
Em=?

R=0.04 B=0.04 v=50 α=60 E=?

E=B*S*ω*sinα=B*π*R²*2*π*v*sinα=0.04*3.14²*0.04²*2*50*0.866=0.0546 B