MCQ
Unit of magnetic moment is
  • Ampere-metre ${ }^2$
  • B
    Ampere-metre
  • C
    Weber-metre ${ }^2$
  • D
    Weber/metre

Answer

Correct option: A.
Ampere-metre ${ }^2$
(a) $M=$ Pole strength $\times$ length $=$ amp-metre $\times$ metre $=$ amp-metr $e^2$

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

A body of mass ' $M$ ' collides against a wall with a velocity $v$ and retraces its path with the same speed. The change in momentum is (take initial direction of velocity as positive)
A simple pendulum with bob of mass $m$ and conducting wire of length $L$ swings under gravity through an angle $2 \theta$. The earth's magnetic field component in the direction perpendicular to swing is B. Maximum potential difference induced across the pendulum is
Image
A spring with spring constant $k$ when stretched through $1 \mathrm{~cm}$, the potential energy is $U$. If it is stretched by $4 \mathrm{~cm}$. The potential energy will be
To increase the magnifying power of telescope ( $f=$ focal length of the objective and $f=$ focal length of the eye lens)
What will be the wave velocity, if the radar gives 54 waves per min and wavelength of the given wave is $10 \mathrm{~m}$
The relation between the displacement $X$ of an object produced by the application of the variable force $F$ is represented by a graph shown in the figure. If the object undergoes a displacement from $X=0.5 \mathrm{~m}$ to $X=2.5 \mathrm{~m}$ the work done will be approximately equal to
Image
In pressure$-$volume diagram given below, the isochoric, isothermal, and isobaric parts respectively, areImage
A body performs S.H.M. Its kinetic energy $K$ varies with time $t$ as indicated by graph
Constantan wire is used in making standard resistances because its
A substance is behaving as convex lens in air and concave in water, then its refractive index is