Exploring Magnetic Fields and Their Effects on Needles: A Scientific Inquiry

• qomoco
In summary, the conversation discusses the effects of a bar magnet on a magnetic needle in terms of direction, neutral points, and dip angle. It is suggested that bringing a bar magnet near a magnetic needle would not change the direction of the needle, but reversing the position of the magnet may have a slight effect on the neutral points. It is also questioned why a dip needle points down instead of horizontally like a compass needle, and whether the dip needle can indicate the relative magnitudes of the Earth's magnetic field components. The discussion ends with uncertainty and the need for further explanation.
qomoco

Homework Statement

suppose a bar magnet is brought near a magnetic needle in a way that does not disturb the latter's position in the magnetic meridian. What can be said concerning the direction of the field due to the magnet?

2. Would reversing the position of the magnet has any effects on the neutral points? and what would a stronger magnet affect the positoin of the neutral ponit.

3.explain why a dip needle point down rather than horizontal as does a compass needle. why does a compass needle not indicate a dip angle?
4. Does the dip needle give any indication of the relative magnitudes of the horizontal and vertical components of the Earth's magnetic field in your locality? explain, using vectors. The angle we got from dip needle was 23.

The Attempt at a Solution

1)I think there won't be direction change, that the bar magnet would be in alignment with the magnet needle. but I'm not sure.
2)Reversing the magnet position, there would still be neutral points, and there won't be any change to the position. It would all be the same. But if a stronger magnet is used instead, then the neutral point would be closer to the center of the bar magnet, since it would take more force from Earth magnetic field to cancel out the magnetic field of the stronger one than the weaker one. But the change would be insignificant, since Earth's magnetic field is so much stronger than the magnet bars.
3) I have no clue...
4) no clue...

Last edited:
bump... no one knows?

bump bump bump...

1. What are magnetic fields?

Magnetic fields are regions in space where magnetic forces are present. They are created by moving electric charges or magnetic materials, and can exert a force on other magnetic objects within their vicinity.

2. What is the study of magnetic fields?

The study of magnetic fields, also known as magnetism, is a branch of physics that focuses on understanding the behavior and properties of magnetic fields. This field of study is important for many technological applications, such as in motors, generators, and magnetic data storage devices.

3. How are magnetic fields measured?

Magnetic fields can be measured using a device called a magnetometer, which detects the strength and direction of the magnetic field. Other methods include using a compass or a Hall effect sensor.

4. What are the practical applications of studying magnetic fields?

Studying magnetic fields has many practical applications in our daily lives. It is used in the development of technology such as MRI machines, particle accelerators, and magnetic levitation trains. It is also used in navigation systems, security systems, and in the production of electricity through generators.

5. How do magnetic fields affect living organisms?

Although magnetic fields are present in our environment and can affect the behavior of some organisms, there is currently no scientific evidence that they have any significant impact on human health. However, some animals, such as birds and sea turtles, use the Earth's magnetic field for navigation and orientation.

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