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A galvanometer is a type of ammeter an instrument for detecting and measuring electric current. A galvanometer can be converted into ammeter by connecting resistance in parallel with it.
That won't work. To convert an ammeter (a galvanometer is a very sensitive type of ammeter) you connect a high value resistor in series with it.
The Helmholtz galvanometer cannot be converted into an ammeter primarily because it is designed to measure small currents through a deflection of a magnetic needle, which is not suitable for the high currents typically encountered in ammeter applications. Additionally, ammeters require a low resistance to avoid significant voltage drop across the meter, while a galvanometer has a high internal resistance that could lead to inaccurate readings or damage when used with high currents. Thus, the operating principles and design constraints of a galvanometer do not align with the requirements for ammeter functionality.
A galvanometer with a low-resistance shunt in parallel with its moving coil is designed to measure larger currents than the galvanometer alone can handle. The shunt allows most of the current to bypass the sensitive coil, protecting it from damage while enabling a more accurate reading of high currents. This setup improves the range and utility of the galvanometer in various applications, allowing it to function effectively as an ammeter. The shunt's resistance is carefully chosen to ensure that the majority of the current passes through it, minimizing the effect on the galvanometer's measurement.
No.AnswerWork it out, yourself, from first principles. Start with the assumption that, for the bridge to be 'balanced' (i.e. with no current flowing through the galvanometer), the potential-difference across the galvanometer is zero. It is quite simple.
A galvanometer is a device used to detect small electric currents, while an ammeter is a device used to measure the strength of electric currents. The main difference is that a galvanometer is more sensitive and used for detecting small currents, while an ammeter is used for measuring larger currents.
A galvanometer is a type of ammeter an instrument for detecting and measuring electric current. A galvanometer can be converted into ammeter by connecting resistance in parallel with it.
What is the difference between the construction of a moving coil galvanometer and a ballistic galvanometer?
Since Galvanometer is a very sensitive instrument therefore it can't measure heavy currents. In order to convert a Galvanometer into an Ammeter, a very low resistance known as "shunt" resistance is connected in parallel to Galvanometer. Value of shunt is so adjusted that most of the current passes through the shunt. In this way a Galvanometer is converted into Ammeter and can measure heavy currents without fully deflected.
To convert a moving coil galvanometer into a multi-range ammeter, you can add shunt resistors of different values in parallel to the galvanometer. By selecting the appropriate shunt resistor, you can change the range of the ammeter. This allows the ammeter to measure a wide range of currents while still using the sensitive galvanometer as the measuring element.
A galvanometer calibrated to read current is called an ammeter. It is used to measure the flow of electric current in a circuit.
By attaching a resistance in parallel connection with the galvanometer. Or when a low resistor connected in parallel with galvanometer ,the galvanometer is converted in ammeter. and the resistor is called shunt resistance.
That won't work. To convert an ammeter (a galvanometer is a very sensitive type of ammeter) you connect a high value resistor in series with it.
A galvanometer with a low resistance shunt in parallel makes an ammeter.
A galvanometer is a sensitive current measuring device that primarily indicates the presence and direction of current, while a voltmeter measures voltage in a circuit. Galvanometers typically have lower resistance and higher sensitivity than voltmeters, which are designed to measure voltage across a component or circuit.
a series resistence with its coil
Either an ammeter or a galvanometer is.