Question

hello,
On lecture 10 (time 15:40) and 11 (26:57), what is the meaning of 'dq' ? Is that a very small charge? an infinitesimal variation(Leibniz notation)? or a differential?

Answer 1

oh Hi, actually dq shows that small amount of charge.... its jst a assumption by professor lewin or any other physics' teacher for showing or convincing that he took small amount of charge

Answer 2

ok thank you ;)

Answer 3

ma pleasure !!!!