- #36
hanii
- 24
- 0
i want to ask one more doubt...,please spare me...you said that there are two effects traveling opposite to one another...nearly at c...,then what would be their relative speed with respect one another??
hanii said:but in a conductor ...electrons travel with a constant speed called drift speed...they don't accelerate...this is due to resistivity of the material used as conductor
sophiecentaur said:There is another point. If the wire is in a loop, the same thing is happening at the negative terminal of the battery - a negative step function sets of from the negative terminal at just under c and at the same time as the positive step starts off from the + terminal. The two waves will meet half way round.
DragonPetter said:Are you sure about this? I don't think that's true. Current/voltage does not travel in both directions at the same time, only to cancel in the middle.
I think your point is mixing together sign convention and voltage level, where you're using both sign conventions at the same time to get two voltages traveling in opposite directions and meeting in the center. You should only use one sign convention at a time, and then you only have one voltage step, instead of 2 from opposite directions.
NightSwimmer said:Think of your wire as a tube completely filled with marbles. Think of your battery as a marble pump inserting marbles into the "negative" end of the tube as it retrieves marbles from the "positive" end of the tube. Then you can envision how all of your lights would illuminate simultaneously.
NightSwimmer said:Think of your wire as a tube completely filled with marbles. Think of your battery as a marble pump inserting marbles into the "negative" end of the tube as it retrieves marbles from the "positive" end of the tube. Then you can envision how all of your lights would illuminate simultaneously.