How would the results of electrophoresis vary if the voltage was increased? if the agarose was made more dense? or if the migration was allowed to run twice as long?.

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

96.77 amp

explanation:

rl = 250/100 = 2.5 ohms.

egl = 250 + (100 × 0.1) + 2 = 262 v.

at 700 r.p.m., eg2 = 262 × 700/1000 = 183.4 v.

if ia is the new current, then eg2 - 2 - (ia × 0.1) = 2.5 ia

which means this will give ia = 96.77 amp.