All Questions
7
questions
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175
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How is Lorentz Force $BQv=BIl$?
The formula for Lorentz Force on moving charge is $$F=BQv$$ which for current carrying wire is modified to $$F=BQv$$$$=BQ\frac lt$$$$=BIl$$
Where $l$ is the length of the wire inside the magnetic ...
- 1,168
0
votes
2
answers
2k
views
Will solenoid expansion take place when current is flowing though it?
I came across this when doing my revision exam paper and had this doubt. I wanted to ask whether a solenoid will expand radially outwards when current flows through it.
(The actual question was ...
- 79
2
votes
3
answers
354
views
What is magnetic flux density
I can't really understand what magnetic flux density really is, why when there are two opposite magnetic flux lines coming into an area they cancel each other? They are not a force to do so even if ...
- 29
1
vote
1
answer
193
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Will electricity follow a path of least resistance on a rotating conductor?
I would like to know if electricity will follow a path of least resistance on a rotating conductor.
Please reference the drawing below.
This is showing a rotating non-conductive disc with a strip of ...
user217618
0
votes
1
answer
451
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Forces between current carrying wires [closed]
Why the wires bearing current in the same direction don't attract to each other?
- 17
1
vote
1
answer
107
views
Does a capacitor experience a Newtonian reaction when being charged?
Say I have a capacitor that is being charged with a battery. There are two wires, one on the positive and one on negative terminal of the battery which go to a capacitor. During the charging, a ...
- 117
1
vote
2
answers
73
views
End current without touching wire
Say I am sending a pulse down a five foot wire. If I want the pulse to not reach the end of the wire, but instead reflect at say the two foot mark, how could I achieve this without physically ...
- 11