Advertisements
Advertisements
प्रश्न
Answer the following question.
Write the four important properties of the magnetic field lines due to a bar magnet.
उत्तर
Important properties of magnetic field lines due to a bar magnet:
- Field lines form a close loop
- Field lines do not intersect
- Degree of the closeness of lines represents the relative strength of the field in regions
- The direction of a magnetic field at a point is along the tangent to a line at that point
संबंधित प्रश्न
Answer the following question in detail.
A circular magnet is made with its north pole at the centre, separated from the surrounding circular south pole by an air gap. Draw the magnetic field lines in the gap.
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?
A closely wound solenoid of 2000 turns and area of cross-section 1.6 × 10-4 m2 , carrying a current of 4.0 A, is suspended through its centre allowing it to turn in a horizontal plane.
What is the force and torque on the solenoid if a uniform horizontal magnetic field of 7.5 × 10-2 T is set up at an angle of 30° with the axis of the solenoid?
When iron filings are sprinkled on a sheet of glass placed over a short bar magnet then, the iron filings form a pattern suggesting that the magnet has ______.
According to the dipole analogy 1/ε0 corresponds to ______.
The resistance of ideal voltmeter is
When current is double deflection is also doubled in
