Electric Charge
Gbogbo ọrọ náà
Rub a balloon on your jumper and it sticks to the wall. Slide across a car seat on a dry day and a tiny spark jumps from your fingertip to the door handle. These everyday surprises are your first encounter with static electricity, a phenomenon that also powers photocopiers, cleans factory smoke, and poses real dangers when fuelling aircraft.
This topic explains how objects become charged, why charged objects attract or repel each other, and how we represent these forces using electric field lines. You will learn to distinguish conductors from insulators, trace the movement of electrons during charging by friction, and connect the physics to both its hazards and its practical applications.
Ebumnobi
- Identify common materials that are electrical conductors or insulators, including metals and plastics
- Investigate how insulating materials can be charged by friction
- Explain how positive and negative electrostatic charges are produced on materials by the loss and gain of electrons
- Know that there are forces of attraction between unlike charges and forces of repulsion between like charges
- Explain electrostatic phenomena in terms of the movement of electrons
- Explain the potential dangers of electrostatic charges, e.g. when fuelling aircraft and tankers
- Explain some uses of electrostatic charges, e.g. in photocopiers and inkjet printers
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Electric Charge. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- When a polythene rod is rubbed with a cloth, the rod becomes negatively charged. This is because: A) Protons move from the cloth to the rod B) Electrons move from the cloth to the rod C) Electrons move from the rod to the cloth D) Protons move from the rod to the cloth Answer: B
- Which of the following is an electrical insulator? A) Copper B) Aluminium C) Steel D) Plastic Answer: D
- Two objects both carry a negative charge. When brought close together they will: A) Attract each other B) Repel each other C) Have no effect on each other D) Neutralise each other Answer: B
- Electric field lines between two parallel charged plates are: A) Curved lines spreading outward B) Straight, parallel and evenly spaced C) Circular around the plates D) Pointing from negative to positive Answer: B
- What is the main danger of static charge building up during aircraft refuelling? A) The fuel becomes too hot B) A spark could ignite flammable fuel vapour C) The aircraft becomes magnetic D) The fuel flows too slowly Answer: B
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Mụtakwuo ihe site na isi mmalite mepere emepe
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Akụkụ akwụkwọ
Electrical Charges, Conservation of Charge, and Transfer of Charge
Describe positive and negative electric charges
"Physics: Electrical Charges, Conservation of Charge, and Transfer of Charge" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/physics/pages/18-1-electrical-charges-conservation-of-charge-and-transfer-of-charge. Access for free at https://openstax.org/books/physics/pages/1-introduction
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Akụkụ akwụkwọ
Applications of Electrostatics
The study of electrostatics has proven useful in many areas. This module covers just a few of the many applications of electrostatics. Van de Graaff generators (or Van de Graaffs) are not only spectacular devices used to demonstrate high voltage due to static electricity—they are also used for serio
"College Physics: Applications of Electrostatics" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/college-physics/pages/18-8-applications-of-electrostatics. Access for free at https://openstax.org/books/college-physics/pages/1-introduction
Ndị otu ndị ọzọ bipụtara ha n'okpuru ikike mepere emepe, anyị na-ekele ha dị ka ha si chọọ. Njikọ na-emepe saịtị ha.
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Electric Charge? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
Budata Ngwa Ahụ Na Google Playstore
Ihe nile ichoro iji nwee ihe ịga nke ọma na JAMB, WAEC & NECO.
