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प्रश्न
How are the magnetic field lines different from the electrostatic field lines?
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उत्तर
Difference between magnetic field lines and electrostatic field lines:
Magnetic field lines form closed loops, whereas electrostatic field lines do not. The magnetic field lines are produced by moving charges, whereas the electrostatic field lines are produced by static positive or negative charges.
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संबंधित प्रश्न
Answer the following question in detail.
Two bar magnets are placed on a horizontal surface. Draw magnetic lines around them. Mark the position of any neutral points (points where there is no resultant magnetic field) on your diagram.
A short bar magnet placed with its axis at 30° with a uniform external magnetic field of 0.25 T experiences a torque of magnitude equal to 4.5 × 10–2 J. What is the magnitude of magnetic moment of the magnet?
If the bar magnet is turned around by 180°, where will the new null points be located?
Which of the following statements about bar magnet is correct?
Which of the following statement about magnetic field lines is true?
Magnetic field at far axial point due to solenoid as well as bar magnet varies ______.
Four point masses, each of value m, are placed at the comers of a square ABCD of side L, the moment of inertia of this system about an axis through A and parallel to BD is ______.
A magnetic needle suspended freely orients itself:-
Use (i) the Ampere’s law for H and (ii) continuity of lines of B, to conclude that inside a bar magnet, (a) lines of H run from the N pole to S pole, while (b) lines of B must run from the S pole to N pole.
A bar magnet is demagnetized by inserting it inside a solenoid of length 0.2 m, 100 turns, and carrying a current of 5.2 A. The coercivity of the bar magnet is ______.
