Answer to Question #53161 in Electric Circuits for Souvik

Question

A potentiometer wire has length 4 m and resistance 8 ohm . The resistance that must be connected in series with the wire and an accumulator of e.m.f 2 V, so as to get a potential gradient 1 mV per cm on the wire is- A) 44 ohm B) 48 ohm C) 32 ohm D) 40 ohm