Galvanometer can be converted into ammeter and voltmeter by connecting resistance with it. What are basic differences in their construction from galvanometer?

A galvanometer can be converted into an ammeter or a voltmeter by connecting a resistance to it. 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 with the galvanometer.
   • The purpose of this is to allow most of the current to bypass the galvanometer so it doesn't get damaged by high currents.
   • The resistance of an ammeter is very small.

2. Voltmeter:

   • A voltmeter is a device used to measure voltage. To convert a galvanometer into a voltmeter, a high resistance (known as series resistance) is connected in series with the galvanometer.
   • The purpose of this is to limit the current passing through the galvanometer, as voltage is being measured and not current.
   • The resistance of a voltmeter is very high.

In both cases, the galvanometer's sensitive nature to current is used, but the way the additional resistance is connected and its value is what differentiates an ammeter from a voltmeter.