9. What is a compass needle? How can you detect the presence of a magnet using a compass needle?
Answers
Answer:
➜A magnetic field is invisible, but it can be detected using a magnetic compass. A compass contains a small bar magnet on a pivot so that it can rotate. The compass needle points in the direction of the Earth's magnetic field, or the magnetic field of a magnet.
Answer:
A compass needle aligns itself and points toward the top of Earth's magnetic field, giving explorers and lost souls a consistent sense of direction.A compass needle is a small bar magnet with north and south pole. The compass needle deflects due to repulsion/attraction with the bar magnet.
Explanation:
The compass needle points in the direction of the Earth's magnetic field, or the magnetic field of a magnet.
Detecting magnetic fields
Detecting magnetic fields A magnetic field is invisible, but it can be detected using a magnetic compass. A compass contains a small bar magnet on a pivot so that it can rotate. The compass needle points in the direction of the Earth's magnetic field, or the magnetic field of a magnet.