megnetic force problem help plz A charged particle (q = +2.7 µC) moves at speed v0 = 50 m/s in the +x-direction. At x = 0 it enters a region where a constant magnetic field B = 3.4 T is directed in the +z direction ? What are the component of electric field ? i got the Ex and Ez which are Zero .. but i can;t figure out the Ey ? so (a) what is Ey ? here are the some hint : Use the Lorentz force law for the net force on a charged particle in a region containing both electric and magnetic fields. (The law is called the "electromagnetic force law" ). but i still can;t figure it out so plz help me out with this . thank you If the incoming particle were replaced by one with the opposite electric charge but the same initial velocity, what electric field would be required to ensure a straight line motion? (Magnetic field is unchanged.) (b) again what is Ey' ?