What is the function of DC ammeter?
What is the function of DC ammeter?
Current is the rate of flow of electric charge. If this electric charge flows only in one direction, then the resultant current is called Direct Current (DC). The instrument, which is used to measure the Direct Current called DC ammeter.
What is ammeter with diagram?
So this device measures the current flow in ampere is named as an ammeter or ampere meter. The internal resistance of this device is ‘0’ however in practical; it has some amount of internal resistance. The measuring range of this device mainly depends on the resistance value. The ammeter diagram is shown below.
How does an ammeter measure DC current?
To measure current, you must connect the two leads of the ammeter in the circuit so that the current flows through the ammeter. In other words, the ammeter must become a part of the circuit itself. The only way to measure the current flowing through a simple circuit is to insert your ammeter into the circuit.
What is the formula of ammeter?
V=IR, here V is the potential difference across a resistance R through which a current I is flowing. The ammeter is connected in series with the circuit. Hence, the reading of the ammeter is equal to 1A.
What is A very sensitive ammeter called?
Picoammeter. A picoammeter, or pico ammeter, measures very low electric current, usually from the picoampere range at the lower end to the milliampere range at the upper end. Picoammeters are used where the current being measured is below the limits of sensitivity of other devices, such as multimeters.
Which is the formula for current?
The current is the ratio of the potential difference and the resistance. It is represented as (I). The current formula is given as I = V/R. The SI unit of current is Ampere (Amp).
How is the construction of an ammeter done?
The construction of ammeter can be done in two ways like series and shunt. The following circuit represents the basic circuit diagram and the connection of the ammeter circuit in series and parallel are shown below. Once this device is connected in series in the circuit, then the total measurand current will flow through the meter.
What kind of circuit diagram is an ammeter?
What is an Ammeter : Circuit Diagram and Its Types We know that meter is an electronic device used to measure a particular quantity and it is associated with the measurement system. Similarly, the ammeter is nothing but ampere-meter used to measure ampere value.
Which is the symbolic representation of the ammeter?
The ammeter symbolic representation is shown below. The construction of ammeter can be done in two ways like series and shunt. The following circuit represents the basic circuit diagram and the connection of the ammeter circuit in series and parallel are shown below.
How is an ammeter used to measure AC and DC?
Moving Coil This type of ammeter is used to measure both AC & DC. This device uses magnetic deflection where the flow of current through a coil will make to move within the magnetic field. The coil in this device moves freely moves between permanent magnet poles.