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A potentiometer is an accurate and versa...

A potentiometer is an accurate and versatile device to make electrical measurements of `E.M.F.` because the method involves
(a) cells
(b) potential gradients
(c) a condition of no current flow through the galvanometer
(d) a combination of cells, galvanometer and resistance

A

Cells

B

Potential gradients

C

A condition of no current flow through the galvanometer

D

A combination of cells , galvanometer and resistances

Text Solution

Verified by Experts

The correct Answer is:
C
Reading of potentiometer is accurate because during taking reading it does not draw any current from the circuit.
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