MCQ
Dimension of magnetic field is :
  • $I^{-1}ML^{0}T^{-2}$
  • B
    $I^{0}MLT^{-2}$
  • C
    $IMLT^{-1}$
  • D
    $IM^{-1}L^{-1}T^{-2}$

Answer

Correct option: A.
$I^{-1}ML^{0}T^{-2}$
(A) $I^{-1}ML^{0}T^{-2}$
[Hint : $F =q v B \Rightarrow B = F / q_V $
$ {[B] } =\frac{[ F ]}{[q][v]} $
$ =\frac{\left[ MLT ^{-2}\right]}{[ IT ]\left[ LT ^{-1}\right]}= I ^{-1} ML ^0 T^{-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

Radius of  nucleus is 3 Fermi. The radius of  nucleus will be

(a) 5 Fermi

(b) 6 Fermi

(c) 11.16 Fermi

(d) 8 Fermi

One metallic sphere A is given positive charge whereas another identical metallic sphere B of exactly same mass as of  A is given equal amount of negative charge. Then

(a) Mass of  A and mass of  B still remain equal

(b) Mass of  A increases

(c) Mass of  B decreases

(d) Mass of  B increases

A, B and C are parallel conductors of equal length carrying currents I, I and 2I respectively. Distance between A and B is x. Distance between B and C is also x.   is the force exerted by B on A and F2 is the force exerted by B on A choose the correct answer

(a)  

(b)  

(c)  

(d)  

The wavelength of a photon needed to remove a proton from a nucleus which is bound to the nucleus with 1MeV energy is nearly:
In one average-life:
  1. Half the active nuclei decay.
  2. Less than half the active nuclei decay.
  3. More than half the active nuclei decay.
  4. All the nuclei decay.

The capacity and the energy stored in a parallel plate condenser with air between its plates are respectively    and . If the air is replaced by glass (dielectric constant = 5) between the plates, the capacity of the plates and the energy stored in it will respectively be

(a)

(b)

(c)  

(d)  

A voltmeter essentially consists of

(a) A high resistance, in series with a galvanometer

(b) A low resistance, in series with a galvanometer

(c) A high resistance in parallel with a galvanometer

(d) A low resistance in parallel with a galvanometer

The angle between magnetic meridian and geographical meridian is called :

The magnetic flux linked with coil, in weber is given by the equation,  The induced emf in the coil in the fourth second is

(a) 10 V

(b) 30 V

(c)  45 V

(d) 90 V

Dielectrics are ____ substances.