wooohooo that was quite a lucky exam for me. I got the same answers!!! i hope your right lol. Number of electrons 8exp7, temp increase 3.6K, p.d across 25ohm resistor 0.797mV (might have been .979 cant remember) 1.4exp7 recession velocity, remember getting mass of electrons exp-28or29, greater than electron at rest , did anyone else get something similar please?