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The study of the presence and flow of electric charge. Charges, currents, fields, potentials.
2
votes
Why the resistance of earth neglected in electrocution
Since we can't read the professor's mind, it is impossible to definitively answer the question "Why did he neglect the resistance of earth?".
The most likely answer is that whilst the resistance of t …
0
votes
Why does resistance increase with length?
@AndresSalas -
The following is a bit of a simplification, but may help you understand.
When current flows through a wire, the electron that enters the wire doesn't immediately come out the other e …