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NEET 2017
Exam
NEET
Year
2017
Subject
Physics
Chapter
Current Electricity

NEET 2017 · Physics · Current Electricity

A potentiometer is an accurate and versatile device to make...

A potentiometer is an accurate and versatile device to make electrical measurements of E.M.F, because the method involves:

Options

  1. ACells
  2. BPotential gradients
  3. CA condition of no current flow through the galvanometer
  4. DA combination of cells, galvanometer and resistances

Correct answer

C. A condition of no current flow through the galvanometer

Step-by-step solution

Reading of potentiometer is accurate because it doesn't draw any current from the circuit while measuring the voltages.
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