In this subtopic, u need to recall all the formulas in chp 2 frm 4, energy & power.
Please recall back what does it mean by conservation of energy, otherwise u gonna be lost…trust me this is a MUST.
Ok , now u must appreciate that energy can be transformed. In a battery, chemical energy is stored. When we connect it to a complete circuit, electrical charge(electron) will flow, which then produce current. At this point, chemical energy is converted to electrical enery. Let say in that cicrcuit, u have a bulb, then some of the electrical energy will b transformed into light & heat energy. All these transformation of energy applies the basic principle of conservation of energy.
That’s y i remind u again, it's important to revise chapter 2 form4.
For this reason i leave u with this video..
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- Cikgu Ahmad
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