An advantage of a permanent magnet moving coil instrument is that it is

The scale of a voltmeter is uniform. Its type is

For a given frequency, the deflecting torque of an induction ammeter is directly proportional to

Four ammeters $$M1, M2, M3$$ and $$M4$$ with the following specifications are available.

A current of $$1$$ $$A$$ is to be measured. To obtain minimum error in the reading, one should select meter