Download App

Magnetism And Matter — Physics STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 SciencePhysicsMagnetism And Matter1 Mark
MCQ
A circular loop carrying a current is replaced by ann equivalent magnetic dipole. A point on the axis of the loop is in:
  • A
    End-on position.
  • B
    Broadside-on position.
  • C
    Both.
  • D
    None.
✓

Answer

  1. End-on position.

Explanation:

Points lying on the axis of a magnet are called end-on points. In our case, the point on the axis of the loop (on replacing the circular loop with an equivalent magnetic dipole) lies on the axis of the magnetic dipole or on the end-on position.

If P was the point on the axis of the loop, then it is clear from the figure that P lies on the end-on position of the equivalent magnetic dipole.

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 "M.C.Q [1M]" from Magnetism And Matter→Magnetism And Matter — all question types→Physics STD 12 Science question papers→Bihar Board STD 12 Science question papers→Bihar Board question paper generator→

Similar questions

The wavefront of a distant source of unknown shape is approximately:
→

According to Gauss’ Theorem, electric field of an infinitely long straight wire is proportional to

(a) r

(b)  

(c)

(d)

→
Width of interference fringe is :
→

If the half life of a radioactive sample is 10 hours, its mean life is

(a) 14.4 hours

(b) 7.2 hours

(c) 20 hours

(d) 6.93 hours
→
A material is placed in a magnetic field, and it is thrown out of it. Then the material is:
→

Two identical bar magnets with a length 10 cm and weight 50 gm-weight are arranged freely with their like poles facing in a inverted vertical glass tube. The upper magnet hangs in the air above the lower one so that the distance between the nearest pole of the magnet is 3mm. Pole strength of the poles of each magnet will be

(a) 6.64 amp × m

(b) 2 amp × m

(c) 10.25 amp × m

(d) None of these
→
A proton exerts a force on a proton which is:
  1. Gravitational.
  2. Electromagnetic.
  3. Nuclear.
  4. Weak.
→
As the temperature of a conductor increases, its resistivity and conductivity change. The ratio of resistivity to conductivity:
  1. Increases.
  2. Decreases.
  3. Remains constant.
  4. May increase or decrease, depending on the actual temperature.
→

A heavy nucleus at rest breaks into two fragments which fly off with velocities in the ratio 8 : 1. The ratio of radii of the fragments is

(a) 1 : 2

(b) 1 : 4

(c) 4 : 1

(d) 2 : 1
→
The magnetic moment of a steel rod of length 'l' is M. It is bent into a semi-circle. The new magnetic moment is :
→