MCQ
A current loop placed in a magnetic field behaves like a
  • Magnetic dipole
  • B
    Magnetic substance
  • C
    Magnetic pole
  • D
    All are true

Answer

Correct option: A.
Magnetic dipole
a
(a) Current loop placed in a magnetic field behaves like a magnetic dipole of magnetic moment

$M=N i A$

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

Similar questions

Two cars are moving in the same direction with a speed of $30\ kph$ . They are separated from each other by $5\ km$ . Third car moving in the opposite direction meets the two cars after an interval of $4\ minutes$ . What is the speed of the third car ?..........$km/h$
In a circus stuntman rides a motorbike in a circular track of radius $R$ in the vertical plane. The minimum speed at highest point of track will be
A $TV$ transmission tower has a height of $140\, m$ and the height of the receiving antenna is $40\, m$. What is the maximum distance upto which signals can be broadcasted from this tower in $LOS$ (Line of Sight) mode?.........$km$ (Given : radius of earth $= 6.4 \times 10^6\, m$)
The refractive index of a prism with apex angle $A$ is cot $A/2.$ The angle of minimum deviation is :
Two particles which are initially at rest, move towards each other under the action of their internal attraction. If their speeds are $v$ and $2v$ at any instant, then the speed of centre of mass of the system will be
The magnetic field to a small magnetic dipole of magnetic moment $M$, at distance $ r$  from the centre on the equatorial line is given by (in $M.K.S. $ system)
A uniform but time varying magnetic field is present in a circular region of radius $R$ . The magnetic field is perpendicular and into the plane of the loop and the magnitude of field is increasing at a constant rate $\alpha $ . There is a straight conducting rod of length $2R$ placed as shown in figure. The magnitude of induced emf across the rod is 
Hydrogen gas is filled in a balloon at $20^\circ C$. If temperature is made $40^\circ C$, pressure remaining same, what fraction of Hydrogen will come out
Two circular coils can be arranged in any of the three situations shown in the figure. Their mutual inductance will be
If the intermolecular forces vanish away, the volume occupied by the molecules contained in $4.5 \,kg$ water at standard temperature and pressure will be