Electricity at a fundamental level, Physics

1.    Explain the basic features of electricity at a fundamental level? ( Describe the nature of electricity)
 
2.    What part of a cable are conductors and insulators? (Recoginize the conducts and insulators)

3.    Describe, in terms of charged particles, why some objects are electrically attracted to each other, while others repel each other? ( Describe attraction and repulsion)

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