A potentiometer circuit is set up as shown. The potential gradient, across the potentiometer wire, is k volt/cm and the ammeter, present in the circuit, reads 1.0 A when two way key is switched off. The balance points, when the key between the terminals (i) 1 and 2 (ii) 1 and 3, is plugged in, are found to be at lengths 7, cm and 1 cm respectively. The magnitudes, of the resistors R and X, in ohms, are then, equal, respectively, to + Hill my Yo Hilt (a) k (1-1) and k 1, (c) k (1-1) and ki, ww 2 mil R www X B (b) k 1, and k (1-1) (d) k 1, and k 1