Write the characteristics of magnetic field lines. - Vidyadip

Question

Write the characteristics of magnetic field lines.

✓

Answer

→ Characteristics of magnetic field lines are as follows:
(i) The magnetic field lines form continuous closed loops. In the region outside a magnet, the magnetic field lines are from N to S , whereas in the region inside the magnet, the field lines are from S to N .
(ii) The tangent to the field line at a given point represents the direction of the magnetic field ( $\overrightarrow{ B }$ ) at that point.
(iii) The larger the number of field lines crossing per unit area, the stronger is the magnitude of the magnetic field $\vec{B}$.
(iv) Two magnetic field lines do not intersect each other. Because if they do, at the point of intersection, the magnetic field would have two directions, which is not possible.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "2 Marks Questions" from MARCH 2024→MARCH 2024 — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Two monochromatic rays of light are incident normally on the face AB of an isosceles right-angled prism ABC. The refractive indices of the glass prism for the two rays ‘1’ and ‘2’ are respectively 1.35 and 1.45. Trace the path of these rays after entering through the prism.

Find the maximum kinetic energy of the photoelectrons ejected when light of wavelength 350nm is incident on a cesium surface. Work function of cesium = 1.9eV

An open organ pipe has a length of 5cm.

Find the fundamental frequency of vibration of this pipe.
What is the highest harmonic of such a tube that is in the audible range? Speed of sound in air is 340m/s and the audible range is 20-20,000Hz.

Is it possible to keep a parallel plate capacitor of capacity 1 Farad in your cupboard?

When a nucleus at rest emits a beta particle, it is found that the velocities of the recoiling nucleus and the beta particle are not along the same straight line. How can this be possible in view of the principle of conservation of momentum?

Calculate the dimensions of:

$\int\vec{\text{E}}.\vec{\text{dl}}.$
$\text{vBl}$
$\frac{\text{d}\psi_{\text{B}}}{\text{dt}}$

The symbols have their usual meanings.

Derive the formula for the magnetic fieid produced by a current-carrying circular coil as a magnetic dipole on its axis and equator. (Perpendicular bisector.)

A parallel beam of light of 500 nm falls on a narrow slit and the resulting diffraction pattern is observed on a screen 1 m away. It is observed that the first minimum is at a distance of 2.5 mm from the centre of the screen. Calculate the width of the slit.

Answer the following question:
In viewing through a magnifying glass, one usually positions one’s eyes very close to the lens. Does angular magnification change if the eye is moved back?

Explain recombination coeflicient of intrinsic semiconductor and obtain the relation $n_t^2=n_{ c } n_{ h }$.