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3
questions
3
votes
4
answers
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Do electric and magnetic lines of force physically exist? [closed]
As per my imagination any thing can't impose force on the other by not giving even a touch(i,e action at a distance). So I thought there must be some physical existence of lines of force. Although ...
- 5,819
15
votes
9
answers
9k
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How do electrons know when a circuit is closed?
I was told that electrons do not begin flowing unless the circuit is closed. The electrons from the battery are not in the ends of wire when it is open, apparently, as there is no reason for them to ...
- 221
1
vote
4
answers
12k
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Why do like charges repel and opposite charges attract? [duplicate]
Why do like charges repel and opposite charges attract?
