Question
Download Solution PDFAn ammeter requires a change of 3 A in its coil to produce a change in deflection of the pointer by 12 mm. Its sensitivity is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept
The sensitivity of ammeter is defined as the current required for full-scale deflection of the ammeter scale.
\(Sensitivity = \frac{{Changeindeflectionofpointer}}{{Changeofcurrent}}\)
Calculation
Given
Change of current = 3 A
Change in deflection of pointer = 12 mm
\(Sensitivity = \frac{{Changeindeflectionofpointer}}{{Changeofcurrent}}\)
\(\frac{{12}}{3} = 4mm/A\)
Last updated on Jun 7, 2025
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