What are magnetic field lines. List two important properties of magnetic field lines.
What are magnetic field lines. List two important properties of magnetic field lines.
Magnetic field lines are the lines that emerge from the north pole and merge at the south pole. Two important properties of magnetic field lines are: (1) The relative strength of the magnetic field is shown by the degree of closeness of the field lines. The field is stronger, that is, the force acting on the pole of another magnet placed is greater where the field lines are crowded. (2) No two field-lines are found to cross each other. If they did, it would mean that at the point of intersection, the compass needle would point towards two directions, which is not possible.
Marking Scheme
- 12 marks
Quick Oral Answer
Magnetic field lines are the lines that emerge from the north pole and merge at the south pole. They are used to represent the direction and strength of the magnetic field. Two important properties of magnetic field lines are: (1) The relative strength of the magnetic field is shown by the degree of closeness of the field lines. (2) No two field-lines are found to cross each other.
Analysis & Explanation
Magnetic field lines are a way to visualize the magnetic field around a magnet or an electric current. They are used to represent the direction and strength of the magnetic field. The properties of magnetic field lines are important to understand the behavior of magnets and electric currents.
Common Mistakes
- 1thinking that magnetic field lines can cross each other
- 2not understanding the relationship between the strength of the magnetic field and the closeness of the field lines
Interesting Facts
Magnetic field lines were first introduced by Michael Faraday in the 19th century.
Magnetic field lines are used in many applications, including magnetic resonance imaging (MRI) and magnetic levitation trains.
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2025?
This question carries 2 marks in the CBSE Class 10 Science 2025 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Magnetic Effects of Electric Current" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Magnetic Field and Field Lines" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2025 paper?
This is a Very Short Answer question from Section B in the CBSE Class 10 Science 2025 paper.