First slide

potentiometer

Question

A potentiometer is an accurate and versatile device to make electrical measurements of EMF because the method involves

Easy

A

potential gradients
B

a condition of no current flow through the galvanometer
C

a combination of cells, galvanometer and resistances
D

cells

Solution

A potentiometer is an accurate and versatile device to make electrical measurements of emf because the method involves a condition of no current flow through the galvanometer, the device can be used to measure potential difference, internal resistance of a cell and compare emf's of two sources.

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