Thevenin resistance Rth is found A. by removing voltage sources along with their internal resistances B. by short-circuiting the given two terminals C. between any two ‘open’ terminalsD. between same open terminals as for Etk

“In any linear bilateral network, if a source of e.m.f. E in any branch produces a current I in any other branch, then same e.m.f. acting in the second branch would produce the same current / in the first branch”.…