What is the main purpose of the tangent galvanometer experiment?
The tangent galvanometer was originally designed to measure an unknown current by comparing the magnetic field produced by that current with the earth’s magnetic field.
What is the formula for tangent galvanometer?
A tangent galvanometer will be sensitive if it gives a large deflection for a fractional change in current. Now we can use the formula $ I = K\tan \theta $ to find the deflection $ d\theta $ and find the condition which gives the maximum deflection. $ n = $ the number of turns of the coil inside the galvanometer.
What is tangent law in tangent galvanometer?
Tangent galvanometer : Tangent galvanometer is a device used for measuring current. It works on the principle of tangent law. A magnetic needle suspended at a point where there are two crossed fields at right angles to each other will come to rest in the direction of the resultant of the two fields.
How do you measure the earth’s magnetic field using a tangent galvanometer?
When the wire loops of the tangent galvanometer are aligned with the magnetic field direction of the Earth, and a current is sent through the wire loops, then the compass needle will align with the vector sum of the field of the Earth and the induced field as shown in Figure 1.
Which type of magnetic field is used in tangent galvanometer?
In a tangent galvanometer, the magnetic induction produced by the coil of wire situated in the magnetic meridian is found to be equal to the horizontal component of the earths magnetic field.
What are the Application of galvanometer?
It is used to determining the current. By using this we can determine the voltage between two points. They are used in control systems, laser engraving, laser TVs, laser sintering, laser displays, etc. They are used in the CD/DVD players & hard drives for controlling the position of head servos.
Why the tangent galvanometer is set into magnetic meridian?
Solution : Tangent galvanometer works on the principle of tangent law . For tangent law , both field should be perpendicular to each other . Thus, when tangent galvanometer is set in magnetic meridian then field due to current carrying coil is perpendicular to horizontal component of earth’s field.
What is the working principle of a galvanometer?
A moving coil galvanometer works on the principle that a current-carrying coil placed in a magnetic field, experiences a torque. The coil springs along with the radial field ensure the deflection to be proportional to the strength of the current.
Who invented tangent galvanometer?
The earliest galvanometer was reported by Johann Schweigger at the University of Halle on 16 September 1820. André-Marie Ampère also contributed to its development. Early designs increased the effect of the magnetic field generated by the current by using multiple turns of wire.
What is reduction factor of tangent galvanometer?
The reduction factor of tangent galvanometer is equal to current, and the unit of current is Ampere. So, the unit of reduction factor of tangent galvanometer is Ampere.
How is a galvanometer used in everyday life?
Galvanometervis used for positioning and controlling system in modern automobiles, and heavy mechanical engineering. 3. There are a lot of important uses of galvanometers with laser scanning systems in civil engineering. This includes material processing, beam designing, crack identifying, beam steering, etc.