Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q27 (NDA-I/2019) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Electricity and magnetism Answer Verified

Which one of the following can charge an insulator?

Result
Your answer: —  Â·  Correct: B
Explanation

Insulators are materials that do not allow electrons to flow freely, making them poor conductors of current electricity. However, insulators can be charged through the process of static electricity, often via the triboelectric effect or friction. When two different materials, particularly insulators like plastic and wool, are rubbed together, electrons are transferred from one to the other [2]. This results in one object becoming positively charged and the other negatively charged [2]. These charges are termed 'static' because they remain stationary on the surface of the insulator rather than flowing through it [1]. While current electricity involves the continuous flow of electrons through conductors, static electricity deals with the buildup of non-moving charges on surfaces. Magnetic and gravitational fields do not inherently transfer net electric charge to a neutral insulator [1].

Sources

  1. [2] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 5: Exploring Forces > Activity 5.6: Let us experiment > p. 70
  2. [1] https://www.britannica.com/science/static-electricity
How others answered
Each bar shows the % of students who chose that option. Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
33%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

NDA-II · 2025 · Q72 Relevance score: 3.50

For a material under static conditions, which one among the following statements is correct ?

NDA-I · 2009 · Q62 Relevance score: -0.69

The force experienced by a unit positive test charge placed at a point is called

NDA-I · 2017 · Q59 Relevance score: -1.09

Which one of the following statements is conect with regard to the material of electrical insulators ?

NDA-II · 2014 · Q18 Relevance score: -1.13

A force F, acting on an electric charge q, in presence of an electro- .magnetic field, moves the charge parallel to the magnetic field with velocity v. Then F is equal to (where B and B are electric field and magnetic field respectively)

NDA-I · 2025 · Q135 Relevance score: -1.17

Which one of the following is NOT a basic property of electric charge ?