They try to make galvanometers so that a linear increase in current results in equal angular displacement of the needle.
reduction factor is used to find earth's magnetic field and compare galvanometer constants
IG=Betanx. in this G is G.constant, I is current, Be is Megnetic field of earth, OK? or anything else?
It measures current.
A tangent galvanometer is set into the magnetic meridian to ensure that its plane is aligned with the Earth's magnetic field. This alignment allows for accurate measurement of the magnetic field produced by an electric current flowing through the coil of the galvanometer. When the galvanometer's coil is positioned in this way, the angle of deflection of the needle directly corresponds to the tangent of the ratio of the magnetic field due to the current to the Earth's magnetic field, facilitating precise calculations.
to detect the sudden change in current.
moving coil galvanometer
What is the difference between the construction of a moving coil galvanometer and a ballistic galvanometer?
Its a point on the galvanometer where the galvanometer shows no deflection as no current passes through it.
The current is reversed in a galvanometer
The galvanometer constant is the factor that relates the deflection of a galvanometer to the current passing through it. It is usually given as the current required to produce a unit deflection (such as one full-scale deflection) on the galvanometer. To find the galvanometer constant, you can pass a known current through the galvanometer and measure the corresponding deflection, then calculate the constant as the current divided by the deflection.
Zero is the normal position of the galvanometer when there is no detection in process.
A current would register on a galvanometer when there is a flow of electric charge through the circuit that the galvanometer is connected to. The galvanometer measures the strength and direction of the current passing through it, displaying this information as a deflection on its dial.
No, a galvanometer does not have polarity. It is a device used to detect and measure small electric currents. The deflection of the needle in a galvanometer indicates the presence and direction of the current but not the polarity.
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.
The galvanometer is very sensitive.
Ohms are the unit of measurement for resistance, so an ohmmeter is a device that measures electrical resistance. A galvanometer measures the current flowing through the resistance, so the two are related. To convert a galvanometer into an ohmmeter, one needs an external battery.
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.