A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F. because the method involves
A. Potential gradients
B. A condition of no current flow through the galvanometer
C. A combination of cells, galvanometer and resistances
D. Cells
Answer:B
A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F. because the method involves
A. Potential gradients B. A condition of no current flow through the galvanometer C. A combination of cells, galvanometer and resistances D. Cells