Current Electricity - Result Question 93

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

[2017]

(a) Potential gradients

(b) A condition of no current flow through the galvanometer

(c) A combination of cells, galvanometer and resistances

(d) Cells

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Answer:

Correct Answer: 98. (b)

Solution:

  1. (b) Reading of potentiometer is accurate because during taking reading it does not draw any current from the circuit.