Find an expression for the electric field e⃗ at distance x from the end of the rod. give your answer in component form. express your answer in terms of the variables q, l, x, unit vectors i^, j^, and appropriate constants.

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?