Question

to determine the resistances of the three resistors . A,B, and C the following procedure is followed. Ra and Rb are connected in series and emf 21 volts is impressed for a current of 1 amps, Rb and Rc are next connected in series and emf 27 volts is impressed for the same adjusted current , finally Rc and Ra are connected in series emf of 24 volts is impressed for the same adjusted current . What are the ohmic values of A, B and C?

Answer 1

The current that flows through most substances is directly proportional to the voltage V applied to it. The German physicist Georg Simon Ohm (1787–1854) was the first to demonstrate experimentally that the current in a metal wire is directly proportional to the voltage applied: I ∝ V