Physical component means Computer Hardware which you can touch and non Physical component means Software, which you can not touch. nonphysical component designed specially for physically component. like Microsoft company designed Software according the Hardware for example Microsoft windows 64 bit could not install on which 32 bit Architecture Hardware.
Neither are correct.
Resistance is opposition to CURRENT not power.
Technition B Is wrong about the voltage thingy.
Answer:
Explanation:
learn by picking up courses and books
but if you don't have any prior programming experience, i recommend you DON'T do c++ first, but instead use an easier language to get the hang of it, like Python.