- #1
junior_J
- 46
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This is a question about practical physics ... if its posted in the wrong section my sincere apologies !
How do i decide the least count of a measuring device such as an ammeter (analog) ?
I know that the least count is the smallest division of measurement ... but why do people take the measurement to the nearest half division ?
Does it have something to do with the pointer(needle) of the ammeter ?? may be its thickness ... i have the same problem with understanding why a measurement made by a metre rule with a least count of 1mm is quoted as say (1.25+/-0.05)cm .
How do i decide the least count of a measuring device such as an ammeter (analog) ?
I know that the least count is the smallest division of measurement ... but why do people take the measurement to the nearest half division ?
Does it have something to do with the pointer(needle) of the ammeter ?? may be its thickness ... i have the same problem with understanding why a measurement made by a metre rule with a least count of 1mm is quoted as say (1.25+/-0.05)cm .