The dc potentiometer is designed to measure up to about 2 V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balance at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of the test cell is

The dc potentiometer is designed to measure up to about 2 V with a sli

1.	The dc potentiometer is designed to measure up to about 2 V with a slide wire of 800 mm. A standard cell of emf 1.18 V obtains balance at 600 mm. A test cell is seen to obtain balance at 680 mm. The emf of the test cell is
A.	1.00 V
B.	1.34 V
C.	1.50 V
D.	1.70 V
Answer» C. 1.50 V