Electrical Engineering: Basic Laws (28 of 31) The Multi Range Current Meter

In this video I will explain what is a multi range current meter.

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[jonahbarrett]

I'm trying to learn the basics of circuits and EE to begin repairing old audio equipment. This course was extremely helpful as I feel I learned as much here as I did during the electricity portion of my physics class at my university. Thank you so much!!!

[muhammadnaufil]

Resistance unit is written wrong. they are not 0.091 mohm but ohm. Not 0.0098 mohm, but ohm. Not 0.000999 m ohm, but ohm.

[ragbearebikegoodlife]

Is there an advantage to full scale deflection OR could you not simply have the smallest shunt resistance and therefore have minimal deflection for lower amp readings and higher deflection for higher readings but all with the same range shunt resistor?

[hermanlegaspi]

Hi Sir. Thank you so much for your comprehensive explanation. However, I think that the orientation of the resistors in the multirange ammeter is hazardous in an actual ammeter. At the moment that the rotary knob switches from one resistor to another and is still pointed in between the resistors, the equivalent resistance of the branch in parallel to the galvanometer would be very high, ideally infinite, so the current will all flow through the galvanometer and it might damage the galvanometer if it is higher than what it can handle. Am I right? I just thought that a sliding resistor may actually work in a real ammeter. Thanks! :)