PHY 114 Lecture Notes - Lecture 2: Electric Field, Farad
Document Summary
Motion of a point charge in a uniform e-field. A uniform electric field has the same strength (magnitude) and direction everywhere. A region of space with a uniform electric field containing a particle of charge q (q > 0) and mass m. We can now use the kinematic equations to solve for distance traveled in a time interval, the velocity at the end of a time interval, etc. Sum of fx = felectric field on charge q = m * a. Felectric field on a charge q = q * e = m * a a = (cid:3044)(cid:3040) * e. To get an upward force on the electron, the electric field must be directed toward the earth. Sum of fy = felectric field on electron - wearth on electron = 0. Felectric field on electron = wearth on electron q * e = m * g.
