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Choose the correct option. Inside a bar magnet, the magnetic field lines - Physics

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प्रश्न

Choose the correct option.

Inside a bar magnet, the magnetic field lines

विकल्प

  • are not present

  • are parallel to the cross-sectional area of the magnet

  • are in the direction from N pole to S pole

  • are in the direction from S pole to N pole

MCQ
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उत्तर

Inside a bar magnet, the magnetic field lines are in the direction from S pole to N pole.

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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 12: Magnetism - Exercises [पृष्ठ २२८]

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बालभारती Physics [English] Standard 11 Maharashtra State Board
अध्याय 12 Magnetism
Exercises | Q 1. (iv) | पृष्ठ २२८

वीडियो ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्न

Magnetic lines of force are closed continuous curves.


Write any three properties of magnetic lines of force.


A bar magnet of length 1 cm and cross-sectional area 1.0 cm2 produces a magnetic field of 1.5 × 10−4 T at a point in end-on position at a distance 15 cm away from the centre. (a) Find the magnetic moment M of the magnet. (b) Find the magnetisation I of the magnet. (c) Find the magnetic field B at the centre of the magnet.


Answer the following question.
Write the four important properties of the magnetic field lines due to a bar magnet.


An electron moves along +x direction. It enters into a region of uniform magnetic field `vec B` directed along −z direction as shown in fig. Draw the shape of the trajectory followed by the electron after entering the field.


Solve the following problem.

Two small and similar bar magnets have a magnetic dipole moment of 1.0 Am2 each. They are kept in a plane in such a way that their axes are perpendicular to each other. A line drawn through the axis of one magnet passes through the center of other magnet. If the distance between their centers is 2 m, find the magnitude of the magnetic field at the midpoint of the line joining their centers.


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 800 turns and area of cross-section 2.5 × 10–4 m2 carries a current of 3.0 A. Explain the sense in which the solenoid acts like a bar magnet. What is its associated magnetic moment?


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?


Which of the following statements about bar magnet is correct?


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 ______.


Which of the following statement about magnetic field lines is true?


In which case of comparing solenoid and bar magnet there is no exact similarity?


Magnetic lines of force due to a bar magnet do not intersect because ______.

The ratio of magnetic fields due to a smaller bar magnet in the end on position to broad side on position is ______.

Magnetic moment for solenoid and corresponding bar magnet is ______.


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 ______.


The magnetic moment of atomic neon is equal to


When current is double deflection is also doubled in


A magnetic needle suspended freely orients itself:-


A bar magnet of magnetic moment m and moment of inertia I (about centre, perpendicular to length) is cut into two equal pieces, perpendicular to length. Let T be the period of oscillations of the original magnet about an axis through the midpoint, perpendicular to length, in a magnetic field B. What would be the similar period T′ for each piece?


There are two current carrying planar coils made each from identical wires of length L. C1 is circular (radius R) and C2 is square (side a). They are so constructed that they have same frequency of oscillation when they are placed in the same uniform B and carry the same current. Find a in terms of R.


A long straight wire of circular cross section of radius 'a' carries a steady current I. The current is uniformly distributed across its cross section. The ratio of magnitudes of the magnetic field at a point `a/2` above the surface of wire to that of a point `a/2` below its surface is ______.


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 ______.


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