Download App

4. Moving charges and magnetism — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics4. Moving charges and magnetism1 Mark
MCQ
A moving coil sensitive galvanometer gives at once much more deflection. To control its speed of deflection
  • A
    A high resistance is to be connected across its terminals
  • ✓
    A magnet should be placed near the coil
  • C
    A small copper wire should be connected across its terminals
  • D
    The body of galvanometer should be earthed
✓

Answer

Correct option: B.
A magnet should be placed near the coil
b
(b)Magnet provides damping.

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 (1 Marks)" from 4. Moving charges and magnetism→4. Moving charges and magnetism — all question types→Physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

A beam of parallel rays is brought to a focus by a plano-convex lens. A thin concave lens of the same focal length is joined to the first lens. The effect of this is
→
A microscope is used with sodium light and its resolving power is not sufficiently large. Higher resolution will be obtained by using wavelength of:
→
In the circuit shown in figure, which of the statement is incorrect ?
→
The waves which are electromagnetic in nature are:
→
What will be the colour of sky as seen from the earth, if there were no atmosphere
→
A metal surface is illuminated by a radiation of wavelength $4500 \; \mathring A$. The ejected photo-electron enters a constant magnetic field of $2 \; mT$ making an angle of $90^{\circ}$ with the magnetic field. If it starts revolving in a circular path of radius $2 \; mm$, the work function of the metal is approximately ............. $eV$
→
A wire carrying current i is shaped as shown. Section AB is a quarter circle of radius r. The magnetic field is directed
→
Two charged particle $A$ and $B$ each of charge $+e$ and masses $12$ $amu$ and $13$ $amu$ respectively follow a circular trajectory in chamber $X$ after the velocity selector as shown in the figure. Both particles enter the velocity selector with speed $1.5 \times 10^6 \,ms^{-1}.$ A uniform magnetic field of strength $1.0$ $T$ is maintained within the chamber $X$ and in the velocity selector.
→
A short bar magnet placed with its axis at $30^{\circ}$ with a uniform external magnetic field of $0.25\; T$ experiences a torque of magnitude equal to $4.5 \times 10^{-2}\; J$. What is the magnitude of magnetic moment (in $J\;T ^{-1}$) of the magnet?
→
The sensitivity of a Galvenometer of resistance $171\,\Omega $ becomes $20\,times$ when we used shunt of $x \,\Omega .$ Find $x$ ................. $\Omega$
→