electric filed a level physicsWatch this thread
question three, i dont get why kinetic energy increase , is because as it moves away from a to b repulsive force
accelerates the electron, causing its kinetic energy to increase
Just to test you: Look at the field's Voltage: in A the Voltage is -40 V, in B it is -10 V, the difference is 30 V. What do you think would it be, if B is in -20 V? is the kinetic energy higher or lower?