Some Questions pestering me , Help

  • Thread starter daemonakadevil
  • Start date
In summary, the conversation discusses negative current and its meaning, the flow of current in a parallel circuit with resistors and capacitors, and the concept of voltage and its effect on the circuit. It is mentioned that negative current means the opposite direction of flow, and the flow of current in a parallel circuit depends on the capacitors' charge. Voltage is compared to pressure in water flow and is said to increase the current through narrow resistors. Additionally, it is noted that AC produces electromagnetic waves.
  • #1
daemonakadevil
21
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Hello friends i am weired in these questing , please help! .

1. What does negative current means , you can see AC current as sin wave graph means
ac goes +ve 1st then -ve & same process keep going , if you're going to say that -ve current means flow of current in charge flow direction then it means charge does vibrating which means wire is producing electromagnetic waves ?? right

2. suppose that if have a resistance & a (resistance+capacitance) in parallel
if we connect a dc batter in that || circuit . from which arm will current flow?
(from resistance arm or (resistance+capacitance) arm) & why?

3. what does voltage means ? , if voltage is high what & why happens in circuit??o:)

Thanks a lot! :tongue2:
 
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  • #2
1. Yeah, negative current just means opposite direction (eg. to the arrows on some diagram).

2. At first (the current alternates from off to on) some current will flow to both arms, but once the capacator charges the flow to that arm will stop.

3. If you consider an analogy to water flow, voltage/potential is a bit like pressure, it increases the current through narrow resistors..
 
  • #3
And yeah, an ac does produce electromagnetic waves...
 

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