Moving Coil Galvanometer and its Conversion to Ammeter/Voltmeter A moving coil galvanometer is an instrument used to measure the current flowing through...
A moving coil galvanometer is an instrument used to measure the current flowing through a conductor by detecting the generated magnetic field. It's essentially a magnet with a coil of wire wound around it. When a current passes through the coil, the magnetic field interacts with the wire, causing the coil to move. The movement of the coil is then detected and measured by an indicator.
Converting the galvanometer into an ammeter/voltmeter involves using additional components and connections. An ammeter measures the current flowing through a conductor by counting the number of turns in the coil that are induced into the conductor when current passes through it. A voltmeter measures the voltage across a conductor by calculating the potential difference between two points in the conductor.
In simple terms, the galvanometer produces a moving needle that indicates the current. The ammeter uses a magnet to induce an electromagnetic field in the conductor, which is then detected by the needle. The voltmeter measures the potential difference between two points in the conductor, which is proportional to the voltage.
In practice, the galvanometer is connected to a meter bridge containing a source of known voltage and current. The galvanometer detects the movement of the coil and adjusts its sensitivity so that it reads the current accurately. The readings from the ammeter and voltmeter are then displayed on separate scales