Download App

Electrostatic Potential and Capacitance — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectrostatic Potential and Capacitance1 Mark
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.
  • C
    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

  1. Van de Graff generator is used to create a large amount of static electricity.

Explanation:

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

Explore more

More "M.C.Q (1 Marks)" from Electrostatic Potential and Capacitance→Electrostatic Potential and Capacitance — all question types→Physics STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Two wires A and B are made of same material. The wore A has a length l and diameter r while the wire B has a length 2l and diameter $\frac{\text{r}}{2}$. If the two wires are stretched by the same force, the elongation in A divided by the elongation in 8 is:

  1. $\frac{1}{8}$

  2. $\frac{1}{4}$

  3. $4$

  4. $8$

→
The inverse square law of intensity $\Big(\text{i.e., the intensity}\propto\frac{1}{\text{r}^2}\Big)$ is valid for a:
  1. Point source.
  2. Line source.
  3. Plane source.
  4. Cylindrical source.
→

A positively charged particle moving due east enters a region of uniform magnetic field directed vertically upwards. The particle will

(a) Get deflected vertically upwards

(b) Move in a circular orbit with its speed increased

(c) Move in a circular orbit with its speed unchanged

(d) Continue to move due east
→
The creation of voltage or electric current in a material upon exposure to light is termed as:
→
A) Line spectra is due to atoms in gaseous state:
B) Band spectra is due to molecules:
→

The instrument that is based on the principle that when an object is placed between first principal focus and the optic centre of convex lens, an upright, virtual and enlarged image on the same side of the object is formed, is:

→
Size of nucleus:
→
Unit of mobility is __________ .
→
The gate that has only one input terminal:
→
The number of electric field lines coming out of charge __________, kept in a vacuum is $1.13 \times 10^{11}$. $\left(\varepsilon_0=8.85 \times 10^{-12} C ^2 N^{-1} m^{-2}\right)$
→