MCQ
What is the use of a Van de Graff generator?
  • A
    Van de Graff generator is used to create a large amount of current.
  • B
    Van de Graff generator is used to create a small amount of voltage.
  • Van de Graff generator is used to create a large amount of static electricity.
  • D
    Van de Graff generator is used to create a small amount of resistance.

Answer

Correct option: C.
Van de Graff generator is used to create a large amount of static electricity.

Van de Graff generator is used to create a large amount of static electricity. A Van de Graff generator uses static electricity and a moving belt to charge a large metal sphere to a very high voltage. As the belt moves, electrons move from the rubber belt to the silicon roller, causing the belt to become positively charged and the roller to become negatively charged. As a result, it builds up positive charge.

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 man can see the object between $15\, cm$ and $30\, cm$. He uses the lens to see the far objects. Then due to the lens used, the near point will be at........$cm$
The inductance of a closed-packed coil of 400 turns is 8 mH. A current of 5 mA is passed through it. The magnetic flux through each turn of the coil is
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
$A$ ray of light moving along the unit vector $(- i - 2j)$ undergoes refraction at an interface of two media, which is the $x-z$ plane. The refractive index for $y > 0$ is $2$ while for $y < 0$, it is $ \sqrt 5 / 2$ . The unit vector along which the refracted ray moves is : 
Following figure shows the path of an electron that passes through two regions containing uniform magnetic fields of magnitudes $B_1$ and $B_2$. It's path in each region is a half circle, choose the correct option
If a metal cube of side $5\, cm$ has a charge of $6$ microcoulombs, then the surface charge density is
In a Young's double slit experiment, the slits are $2 \,mm$ apart and are illuminated with a mixture of two wavelength ${\lambda _0} = 750\,nm$ and $\lambda = 900\,nm$. The minimum distance from the common central bright fringe on a screen $2\,m$ from the slits where a bright fringe from one interference pattern coincides with a bright fringe from the other is.....$mm$
An electron and a proton enter a magnetic field perpendicularly. Both have same kinetic energy. Which of the following is true
An infinite line charge is at the axis of a cylinder of length $1 \,m$ and radius $7 \,cm$. If electric field at any point on the curved surface of cylinder is $250 \,NC ^{-1}$, then net electric flux through the cylinder is ............ $Nm ^2 C ^{-1}$
$A$ and $B$ are two identical spheres charge on them is $7\,\mu C$ and $1\,\mu C$ respectively. Now both are connected by a wire. Calculate flow of charge from $A$ to $B$......$\mu C$