6) Define figure of merit of a galvanometer? Which has more resistance, a galvanometer or a millimeter?
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A galvanometer is an instrument to measure small electric current.
Figure of merit of any device is a number representing the degree of effectiveness or efficiency of an instrument.
Figure of merit of a galvanometer is the amount of current required to produce a deflection of one division in the galvanometer scale and is represented by K.
Resistance of galvanometer and milliameter.
The milliameter can detect a very small amount of current and so its resistance is low compared to a galvanometer.
Therefore the galvanometer has more resistance than a milliameter.
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