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Electrical Energy

NIOS · Class 10 · Science & Tech

Flashcards for Electrical Energy — NIOS Class 10 Science & Tech. Quick Q&A cards covering key concepts, definitions, and formulas.

102 questions50 flashcards5 concepts

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A labeled diagram illustrating Coulomb's Law, showing two point charges (one positive, one negative, or both positive) separated by a distance 'r', and the electrostatic forces acting on each charge.
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50 Flashcards
Card 1Electrostatics

What is frictional electricity or static electricity?

Answer

The electricity or charge developed on a body on rubbing with another body is called frictional electricity or static electricity. It often shows up when small bits of paper are attracted to a rubbed

Card 2Electrostatics

Why does a rubbed comb attract small bits of paper?

Answer

Rubbing transfers electrons from one material to another, so the comb becomes charged. The charged comb then attracts light paper bits by electrostatic force.

Card 3History of electricity

What did Thales of Miletus observe about amber?

Answer

He observed that amber rubbed with wool attracts light feathers, dust, lint, and pieces of leaves. This was one of the earliest observations related to electric charge.

Card 4Electrostatics

Why can metals be charged by rubbing only when held with an insulating handle?

Answer

If a metal is held directly by hand, charge leaks through the body to earth. When it is held with an insulating handle like glass or amber, the charge stays on the metal and charging is possible.

Card 5Activity and observation

What happened in the paper-bit experiment with the rubbed pen and balloon?

Answer

Before rubbing, the pen or balloon did not attract the paper bits. After rubbing, they attracted the paper bits. When the pen was rolled between the palms, it lost the charge and could not attract the

Card 6Electrostatics

Why do two uncharged straws not affect each other?

Answer

Uncharged objects do not have an electric charge imbalance, so there is no electrostatic force between them strong enough to cause attraction or repulsion.

Card 7Electrostatics

Why do two charged straws repel each other, but a charged straw and a charged glass bottle attract each other?

Answer

Like charges repel each other while unlike charges attract each other. A straw rubbed with paper and a glass bottle rubbed with silk acquire different kinds of charge.

Card 8Electrostatics

What is the conclusion from the straw and glass bottle experiment?

Answer

Two different types of charges are produced. Like charges repel each other while unlike charges attract each other.

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Frequently Asked Questions

What are the important topics in Electrical Energy for NIOS Class 10 Science & Tech?
Key topics in Electrical Energy include Electrical Energy Concept Map, Electrical Energy Chapter Overview, Electrical Energy Concept Overview. These are the concepts NIOS Class 10 examiners draw on most — study them first, then practise related questions.
How to score full marks in Electrical Energy — NIOS Class 10 Science & Tech?
Understand the core concepts first, then work through the 102 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many flashcards are available for Electrical Energy?
There are 50 flashcards for Electrical Energy covering key definitions, formulas, and concepts. Use them daily for 10–15 minutes for best results.

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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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