Most Essential Learning Competency
Most Essential Learning Competency
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Describe the different types of charging processes
Electrical energy is the energy required to operate appliances, gadgets and machines in a form of electricity. Electricity originates from motion of charges.
Matter is made from materials with varying atomic composition that gives results to differences in electrical properties.
Conductor are materials that allows electricity to pass through it. (example: iron bar, steel, copper and other metals)
Insulator are materials that does not allow electricity to pass through it. (example: wood, rubber, plastic materials)
Types of charging processes
Charging by friction
The ability to lose or gain electron takes the key in this type of charging. By rubbing, electrons were stripped off thereby creating difference in the charges between 2 objects (of which electrons transfer)
Law of Conservation of Charge
Charges cannot be created nor destroyed, but can be transferred from one material to another.
The total charge in a system must remain constant.
Charging by induction
An object can be charged without actual contact to any other charged object.
Electric force acts on charges. Uncharged or neutral object cannot experience this force. There are 2 kinds of electric forces: repulsive and attractive.
Electrostatic Law
Like charges repel and unlike charges attract
When neutral object is placed near the charged object, the charges within the neutral object rearranged, such that the charged objects attract the opposite charge within the neutral object;. This is called polarization.
Discharging is a process of removing excess charge on objects. Grounding occurs when discharging is done by providing a path between the charged object and the ground. (example lightning rod provide a path from the flow of electricity from lightning to the ground)
Charging by conduction
This involves the contact of a charged object to a neutral object
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