Which type of resistance is best measured using a Series type Ohm meter?
Medium resistance ranging from few ohms to kilo-ohms
In a series-type ohmmeter the unknown resistance is placed in series with a battery, a current-limiting resistor and a moving-coil meter; the deflection depends on the total series current.
When the unknown resistance is zero (leads shorted) the current is maximum, giving full-scale deflection, and when it is infinite (open) the current is zero, giving no deflection, so the scale is reversed and non-linear.
Very small resistances all sit near the full-scale end and very large resistances all crowd near the zero end, so both extremes are read poorly.
The mid-scale region, where deflection changes most sharply with resistance, corresponds to values from a few ohms up to the kilo-ohm range, so this is where a series ohmmeter reads most accurately.
Hence, the answer is Medium resistance ranging from few ohms to kilo-ohms.
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