MCQ
A circular loop carrying a current is replaced by an equivalent magnetic dipole. A point on the loop is in:
- AEnd-on position.
- BBroadside-on position.
- CBoth.
- DNone.
✓
Answer
- Broadside-on position.
Explanation:
The position of the points lying on the equator of a magnetic dipole is called the broadside-on position. In our case, the point on the loop (after replacement of the circular loop with an equivalent magnetic dipole) lies on the equatorial position of the equivalent magnetic dipole. Hence, the point lies on the broadside-on position.
If P was the point on the loop, then it is clear from the figure that point P lies on the broadside-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.
Explore more
Similar questions
If n drops, each of capacitance C, coalesce to form a single big drop, then the ratio of the energy stored in the big drop to that in each small drop will be
|
(a) n : 1 |
(b) n1/3 : 1 |
(c) n5/3 : 1 |
(d) n2 : 1 |
With respect to air critical angle in a medium for light of red colour [
is q. Other facts remaining same, critical angle for light of yellow colour [
] will be
|
(a) θ |
(b) More than θ |
(c) Less than θ |
(d) |
Electrical energy is transmitted over large distances at high alternating voltages. Which of the following statements is (are) correct?
A hydrogen atom in ground state absorbs 10.2eV of energy. The orbital angular momentum of the electron is increased by:
- 1.05 × 10-34Js
- 2.11 × 10-34Js
- 3.16 × 10-34Js
- 4.22 × 10-34Js
Optical fibre communication is based on which of the following phenomena :
The potentials of the two plates of capacitor are +10V and –10 V. The charge on one of the plates is 40 C. The capacitance of the capacitor is
|
(a) 2 F |
(b) 4 F |
(c) 0.5 F |
(d) 0.25 F |
A coil has 100 turns. When a current of 5A produces a magnetic flux of $1\mu\text{Wb}$, the coefficient of self induction is :
→A point object O is placed on the principal axis of a convex lens of focal length f = 20cm at a distance of 40cm to the left of it. The diameter of the lens is 10cm. An eye is placed 60cm to right of the lens and a distance h below the principal axis. The maximum value of h to see the image is:
- 0
- 2.5cm
- 5cm
- 10cm.
Number of electrons in the valence shell of a semiconductor is:
When a ray of light emerges from a block of glass, the critical angle is
|
(a) Equal to the angle of reflection |
|
(b) The angle between the refracted ray and the normal |
|
(c) The angle of incidence for which the refracted ray travels along the glass-air boundary |
|
(d) The angle of incidence |