This document introduces the topics of static electricity, current electricity, and power generation. It discusses what causes static electricity, such as walking across carpet and touching something to get a shock. Static electricity occurs when electrons are not moving along a path but rather build up as they move between atoms. The document also covers electric charge, conductors, insulators, and tools for detecting electric charge like electroscopes.
Magnetism and Electricity - ppt useful for grade 6,7 and 8tanushseshadri
Magentismand Electricity - ppt useful for grade 6,7 and8
Content
Magnets
Electromagnets
Electric bell
bar magnet
permanent magnet
Electromagnetism
Materials used to make a magnet
lodestone etc
Hope u guys like it
Magnetism and Electricity - ppt useful for grade 6,7 and 8tanushseshadri
Magentismand Electricity - ppt useful for grade 6,7 and8
Content
Magnets
Electromagnets
Electric bell
bar magnet
permanent magnet
Electromagnetism
Materials used to make a magnet
lodestone etc
Hope u guys like it
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Electric Charge and Static Electricity PPT.pptxMathandScienced
In physics, a force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity
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An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
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Digital Tools and AI for Teaching Learning and Research
Grade 9-U2-L1-Static electricity
1. Introduction to Electricity
• In this unit we will be studying:
• Static electricity
• Current electricity
• Power generation.
2. • Did you ever walk across a carpet,
touch something and get a shock?
That shock was caused by static
electricity. The science of static
electricity is called electrostatics.
Static ElectricityStatic Electricity
3. • The word ‘static’ means not moving
• Static electricity means electrons are
not moving along a path or not flowing
(current electricity).
• Rather electrons are supplied from one
atom and moved onto another atom
resulting in a build-up of charge.
Static ElectricityStatic Electricity
5. If an object has more
electrons than protons,
it is negatively charged.
Electric ChargeElectric Charge
# protons: 8
# electrons: 12
# protons < # electrons
therefore, overall charge = negative
6. if an object has more
protons than electrons,
it is positively charged
Electric ChargeElectric Charge
# protons: 8
# electrons: 5
# protons > # electrons
therefore, overall charge = positive
7. If an object has an equal
number of protons and
electrons, the object is neutral
Electric ChargeElectric Charge
# protons: 8
# electrons: 8
# protons = # electrons
therefore, overall charge = neutral
11. • Electrons can be transferred from one
object to another.
• For example, a neutral or positively
charged object will become negatively
charged if it gains electrons.
Electric ChargeElectric Charge
12. • Similarly, a neutral or negatively
charged object will become
positively charged if it loses
electrons.
Electric ChargeElectric Charge
13. Only electrons (negative
charges) are capable of
moving from one object to
another!
Protons (positive charges)
stay in place.
Electric ChargeElectric Charge
14. • Conductivity is the ability of materials to
allow electrons to move freely
• Materials that hold on to their electrons
and do not allow them to move easily
are called electrical insulators
• Materials that allow electrons to change
positions are called conductors
Conductors & InsulatorsConductors & Insulators
19. Detecting ChargesDetecting Charges
• There are different instruments used to
detect charged objects:
– Pith Ball Electroscope
– Metal Leaf Electroscope
• In both instruments neutral position of
leaves/ball changes when charged
object is place closeby
20. Pith Ball ElectroscopePith Ball Electroscope
• A pith ball electroscope
consists of a neutrally
charged ball of pith (plant
material) and non-
conductive string and
stand
• When charged object
brought close to ball, the
ball will be attracted to it
21. Metal Leaf ElectroscopeMetal Leaf Electroscope
• A metal leaf electroscope is more sensitive to electric charge
than a pith ball electroscope
• When charged object brought close to metal ball or cap, the
leaves will repel each other and spread apart
22. Videos and Practice Questions
• https://www.youtube.com/watch?v=yc2-363MIQs
• https://www.youtube.com/watch?v=QxZ6AWLpnUw
• https://www.youtube.com/watch?v=oU8Fe6846d4