Consider a rectangular cardboard having two holes P and Q through which a current carrying circular loop has been inserted as shown in the diagram.
(a) Make this diagram on your answer sheet and draw three magnetic field lines, one each passing through the points 1 (near P), 2 (at the centre of the loop) and 3 (near Q).
(b) List two factors on which the intensity of the magnetic field produced at the centre of the loop depends.
(c) Name the rule you will apply to determine the direction of magnetic field produced due to a current carrying straight conductor.
Consider a rectangular cardboard having two holes P and Q through which a current carrying circular loop has been inserted as shown in the diagram.
(a) Make this diagram on your answer sheet and draw three magnetic field lines, one each passing through the points 1 (near P), 2 (at the centre of the loop) and 3 (near Q).
(b) List two factors on which the intensity of the magnetic field produced at the centre of the loop depends.
(c) Name the rule you will apply to determine the direction of magnetic field produced due to a current carrying straight conductor.
Official answer
The magnetic field lines are shown in the diagram below. The intensity of the magnetic field produced at the centre of the loop depends on the current flowing through the loop and the radius of the loop. The direction of the magnetic field produced due to a current carrying straight conductor can be determined using the right-hand thumb rule.
Marking scheme
- 1.Draw the magnetic field lines through points 1, 2, and 3.
- 2.List two factors on which the intensity of the magnetic field produced at the centre of the loop depends.
- 3.Name the rule you will apply to determine the direction of magnetic field produced due to a current carrying straight conductor.
Hint
Use the right-hand thumb rule to determine the direction of the magnetic field.
Quick oral answer
The magnetic field lines are shown in the diagram below. The intensity of the magnetic field produced at the centre of the loop depends on the current flowing through the loop and the radius of the loop. The direction of the magnetic field produced due to a current carrying straight conductor can be determined using the right-hand thumb rule.
Common mistakes
- 1.Drawing the magnetic field lines incorrectly.
- 2.Not listing the correct factors that affect the intensity of the magnetic field.
- 3.Not naming the correct rule to determine the direction of the magnetic field.
Analysis and explanation
The magnetic field lines are shown in the diagram below. The intensity of the magnetic field produced at the centre of the loop depends on the current flowing through the loop and the radius of the loop. The direction of the magnetic field produced due to a current carrying straight conductor can be determined using the right-hand thumb rule.
Interesting facts
The magnetic field lines are always closed loops.
The direction of the magnetic field can be determined using the right-hand thumb rule.
Question details
Q32 of 39 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- Science
- Year
- 2025
- Section
- Section C
- Marks
- 3
- Type
- Short Answer
- Chapter
- Magnetic Effects of Electric Current
- Topic
- Magnetic Field Lines
- Bloom's level
- Understanding
- Syllabus topic
- Magnetic Field Lines
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Frequently asked questions
How many marks does this question carry in CBSE Class 10 Science 2025?
This question carries 3 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 Lines" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2025 paper?
This is a Short Answer question from Section C in the CBSE Class 10 Science 2025 paper.