A Wien Filter (Velocity Selector) Consists of Uniform Electric and Magnetic

A Wien filter (velocity selector) consists of uniform electric and magnetic fields, with E pointing along the z-axis and B along the y-axis. B has a value of 15.0 mT. What is the value of E such that a 600 eV electron moving along the positive x-axis is undeflected?

A) 8.9 × 10⁴ N/C
B) 2.2 × 10⁵ N/C
C) 5.3 × 10⁵ N/C
D) 1.9 × 10⁶ N/C