T.G is a device used for determination of the horizontal component of the magnetic field of the earth,and the internal resistance of T.G T.G consists of : 1-coil of wire of many turns(2 to 500) 2-small magnetic needle at the center of the coil 3-box of resistants
A tangent galvanometer is called so because it uses the tangent of the angle through which a magnetic needle is deflected to measure electric current. The horizontal component of the Earthโs magnetic field and a coil carrying current creates a magnetic field that deflects the needle, making it tangent to the circle of the coil.
it is the current measured in amphere..
to detect the sudden change in current.
IG=Betanx. in this G is G.constant, I is current, Be is Megnetic field of earth, OK? or anything else?
reduction factor is used to find earth's magnetic field and compare galvanometer constants
A Tangent Galvanometer is used to measure small electric currents in a circuit. It works on the principle of the tangent law of magnetism, where the magnetic needle aligns with the magnetic field produced by the current passing through a coil. This alignment allows for the measurement of the current based on the angle of deflection of the needle.
The reduction factor of a tangent galvanometer is the ratio of the tangent of the angle of deflection produced by a given current to the actual value of that current. It is used to calibrate the instrument so that the deflection angle can be directly related to the current flowing through it.
A tangent galvanometer is used to determine the horizontal component of Earth's magnetic field by aligning the coil axis of the galvanometer with the magnetic field lines. When a current is passed through the coil, it creates a magnetic field that interacts with the Earth's magnetic field, causing the coil to twist until it aligns with the Earth's magnetic field. By measuring this deflection angle, the horizontal component of Earth's magnetic field can be calculated.
1) to calculate coeficient of error 2) to calculate deviation between the readings to infere a behaviour
We find it by varying the current flowing through it and by measuring the deflection respectively and then we use the formula k=I/tan(theta)
The needle of a tangent galvanometer moves when the current passing through it increases or decreases because of the magnetic field produced by the current. This magnetic field interacts with a permanent magnet in the galvanometer, causing the needle to deflect. The deflection is proportional to the strength of the current passing through the galvanometer.
Ballistic galvanometers are used in applications where a very short-duration current measurement is required, such as measuring the charge of particles in particle physics experiments or determining the output of pulsed power supplies. They are also used in high-speed photography to capture events that occur in a very short period of time.