Question:
What is the meaning of infinity in definition of electric potential?
What is the meaning of electric field?
Why the cell has two ends, negative and positive?
Which end contains more electric charge, negative or positive?
In an electric circuit, current moves from which end to which end and why?
Answer:
Lets take an example to understand the Infinity.
Take a system and go some distance away from it.If you larger and larger distances away from this system,the influence of the system becomes more and more negligible.
So,at infinity there is no influence or zero influence of a considered system.
Electric field,is a region around a charge or a charged particle within which when some other charge come,experiences force on it.
Cell has two terminals,positive and negative terminals.
The positive terminal of cell has high potential and the negative terminal has low potential.
The number of electrons (negative charge) is more at negative terminal and when a cell is connected in a circuit,the current flows from its positive terminal to negative terminal.
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