Physics Class 10 Practical 32 Important Conceptual Viva Questions with Answers (To trace the magnetic field using a bar magnet)

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Conceptual Viva Questions and Answers

Question 1: What is a magnetic field? 

Answer: A magnetic field is a region around a magnetic material or a moving electric charge within which the force of magnetism acts.

Question 2: How can you visualize a magnetic field around a bar magnet? 
Answer: You can visualize a magnetic field by sprinkling iron filings around a bar magnet or using a compass to trace the magnetic field lines.

Question 3: What do the iron filings represent in this experiment? 
Answer: The iron filings align themselves along the magnetic field lines, showing the pattern and direction of the magnetic field.

Question 4: How do magnetic field lines around a bar magnet appear? 
Answer: Magnetic field lines around a bar magnet emerge from the north pole and curve around to enter the south pole, forming closed loops.

Question 5: Why do we use a compass to trace the magnetic field? 
Answer: A compass needle aligns itself with the magnetic field lines, helping to trace the direction and shape of the magnetic field.

Question 6: What is the significance of the direction of magnetic field lines? 
Answer: The direction of magnetic field lines indicates the direction in which a north pole of a compass needle would point, showing the magnetic force's direction.

Question 7: What does the density of magnetic field lines indicate? 
Answer: The density of magnetic field lines indicates the strength of the magnetic field; closer lines represent a stronger field.

Question 8: Where is the magnetic field strongest around a bar magnet? 
Answer: The magnetic field is strongest at the poles of the bar magnet, where the field lines are most concentrated.

Question 9: Why do magnetic field lines never cross each other? 
Answer: Magnetic field lines never cross because each point in space can have only one direction of the magnetic field.

Question 10: What happens to the magnetic field lines when two like poles of bar magnets are brought close to each other? 
Answer: When two like poles are brought close, the magnetic field lines repel each other, resulting in a distorted field pattern.