Biography, Science, Technology, Health, History Blogs

10 Question-answer on electric current 1.        Constant current is flowing through a linear conductor of non-uniform area of cross-section. The charge flowing per second through the area of conductor at any cross-section is: (a)     Proportional to the area of cross section (b)    Inversely proportional to the area of cross section (c)     Independent   of the area of cross section (d)    Dependent on the length of conductor. Ans: (c) 2.        When the current I is flowing through a conductor, the drift velocity is v. if 2i current is flowed through the same metal but having double the area of cross-section, then the drift velocity will be: (a)     v (b)    v/2 (c)     v/4 (d)    4v Ans: (a) 3.        When the electric current through a conducting wire along its length...