NEET · Physics · STD 12 - 3. current electricity
A potentiometer is an accurate and versatile device to make electrical measurements of \(EMF\) because the method involves
- A potential gradients
- B a condition of no current flow through the galvanometer
- C cells
- D a combination of cells, galvanometer and resistances
Answer & Solution
Correct Answer
(B) a condition of no current flow through the galvanometer
Step-by-step Solution
Detailed explanation
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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