question_answer 45)

  A current of 1 A is drawn by a filament of an electric bulb. Number of electron passing through a cross-section of the filament in 168 would be roughly (a)                                 (b)                                                 (c)                                  (d)

Answer:

                  (a) Given, current, Time, t =16s Number of electrons n = ?We know that, Current,    [ charge of an electron and ]