Galvanometer can be converted into ammeter and voltmeter by connectingresistance with it. What are basic differences in their construction fromgalvanometer?

A galvanometer can be converted into an ammeter or voltmeter by connecting it with a resistance. Here are the basic differences in their construction from a galvanometer:

1. Ammeter: An ammeter is a device used to measure current. To convert a galvanometer into an ammeter, a low resistance (known as shunt resistance) is connected in parallel to the galvanometer. The purpose of this is to allow most of the current to pass through the shunt resistance and only a small fraction of it through the galvanometer. This is done because a galvanometer is a very sensitive device and can be damaged by large currents.

2. Voltmeter: A voltmeter is a device used to measure voltage. To convert a galvanometer into a voltmeter, a high resistance is connected in series with the galvanometer. The purpose of this is to limit the current passing through the galvanometer, as a voltmeter is supposed to measure the potential difference between two points without significantly altering the current in the circuit.

So, the basic difference in the construction of an ammeter and a voltmeter from a galvanometer lies in the way resistances are connected to the galvanometer. In an ammeter, the resistance is connected in parallel, while in a voltmeter, the resistance is connected in series.