NEET2017Physics-Current Electricity
NEET 2017 Physics Potentiometer MCQ Question
Type: MCQ-conceptual-Medium-Class 12
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 resistances.
Correct Answer
Option C
Detailed Explanation
A potentiometer measures the potential difference by balancing it against a known voltage, using the principle of potential gradients.
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