Why are we taking the full division , ans comes when we take full division but galvanometer has that-ve 0 +ve deflection so shouldn't we take only half the divisions.
Ans is 1
#galvanometer div
junior flower
tall pelican
thorny bough
Why are we taking the full division , ans comes when we take full division but g...
The range includes both sides, since it is considered that a negative value in a galvanometer can also be meaningful
Not sure if that's the convention across jee questions but that's how you'd explain this option
junior flower
The range includes both sides, since it is considered that a negative value in a...
Wait , why would the range include both sides it makes no sense. Right side of zero and left side of zero give same value . How will that implement in an voltmeter
thorny bough
It means that the potential difference is on the opposite side
so current is flowing the other way round
junior flower
It means that the potential difference is on the opposite side
Ye still the magnitude must be same , the question is asking for range of 0 to xV , so shouldn't we take only half the divisions
thorny bough
The idea is that even though the magnitude is the same, the actual value (and the direction of the needle) is different and we understand the data from it
or it can be converted into a different reading later on (eg: instead of labelling the galvanometer from -xV to +xV you can label it from 0 to +2xV)
junior flower
+solved @thorny bough