Direction of deflection in a galvanometer?

In summary, a galvanometer is a device that measures and detects small electric currents by using a coil of wire suspended in a magnetic field. The direction of deflection in a galvanometer indicates the direction of current, which can be affected by factors such as the strength of the magnetic field and the design of the galvanometer. It is calibrated by adjusting the magnetic field and comparing readings to a known current source. Galvanometers have various applications in engineering, medicine, and navigation.
  • #1
phy1210
10
0
In which direction will the pointer move when current is passed?

------->-------(|)--------->----------

[Galvanometer]

Does it move to the right?

AND

There is another one that is connected from top to bottom:

|
|
^
|
|
|
(|) [Galvanometer]
|
|
|
^
|
|
|

Where will the (|) move?
 
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  • #2
Have you connected the galvanometer to a current source? Or is this some kind of homework question?
 
  • #3
Yes of course! Not related to homework.

I don't know how it functions in practical. Can you predict the direction of the deflection?
 

1. What is a galvanometer and how does it work?

A galvanometer is a device used to measure and detect small electric currents. It works by using a coil of wire suspended in a magnetic field, which creates a torque on the coil when a current flows through it. This torque causes the coil to rotate, which can be measured and calibrated to determine the strength and direction of the current.

2. How does the direction of deflection in a galvanometer indicate the direction of current?

The direction of deflection in a galvanometer is determined by the direction of the magnetic field and the direction of the current flowing through the coil. The magnetic field exerts a force on the coil, causing it to deflect in a certain direction. The direction of the current can be determined by the direction of this deflection, as the current will flow in the opposite direction of the force exerted on the coil.

3. What factors can affect the direction of deflection in a galvanometer?

The direction of deflection in a galvanometer can be affected by several factors, including the strength of the magnetic field, the current flowing through the coil, and any external forces acting on the coil. Additionally, the design and construction of the galvanometer can also impact the direction of deflection.

4. How is the direction of deflection in a galvanometer calibrated?

The direction of deflection in a galvanometer can be calibrated by adjusting the position and strength of the magnetic field, as well as the number of turns in the coil. This allows for precise measurements of current in a specific direction. Additionally, the galvanometer can be calibrated by comparing its readings to those of a known current source.

5. What are some common applications of galvanometers?

Galvanometers have many applications in both scientific and industrial fields. They are commonly used in electrical engineering for measuring and monitoring currents in circuits. They are also used in medical equipment, such as electrocardiograms, to detect and measure small electric currents in the body. In physics experiments, galvanometers can be used to measure the strength and direction of magnetic fields. Additionally, they are used in navigation systems, such as compasses, to detect changes in magnetic fields and determine direction.

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