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Important Long Answer Type Questions for CBSE Class 10 Science Exam -
●What are ‘magnetic field lines’?
●How is the direction of a magnetic field at a point determined ?
Answers
ANSWERS:
Q-1). What are ‘magnetic field lines’?
Ans. The curved path along which magnetic compass move due to force acting on them in the magnetic field is called magnetic field lines.
Q-2). How is the direction of a magnetic field at a point determined ?
Ans. The rule for determining the direction of magnetic field of a current carrying wire is the right hand thumb rule and Fleming left hand thumb rule.
Right Hand thumb rule :-
According to this rule " If we hold the conductor in our right hand in such a way thumb point out the direction of current then curling finger indicates the direction of the magnetic field.
Fleming left hand thumb rule:-
According to Fleming "If we stretch our left hand in such a way thumb, first finger & second finger are mutually perpendicular to each other than thumb indicates the direction of force, first finger indicates the direction of magnetic field & second finger indicates the direction of current.
Answer:
Hardy here is your answer my bestu..
What are magnetic field lines ?
Magnetic field lines are a visual tool used to represent magnetic fields. They describe the direction of the magnetic force on a north monopole at any given position. ... One useful analogy is the close connection between magnetic monopoles and electric charges.
How is the direction of a magnetic field at a point determined ?
The direction of a magnetic field at a point is determined by placing a small compass needle. The N - pole of compass indicates the direction of magnetic field at that point.
Hope it helps you...
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