about dc circuit

Discussion in 'General Electronics Chat' started by nikhilthunderlion, Oct 1, 2007.

  1. nikhilthunderlion

    Thread Starter Member

    Oct 1, 2007
    23
    0
    is it possible in a dc circuit consisting of an dc voltage source and a resistor in series ,that when voltage is high current is low
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    The relationship for current is I - E/R. If R is high, then I will be low even is E is also high. If E is 100 volts and R is 5 Gohms, then I will be .0000000002 amps.
     
  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    If the resistor is fixed, the more voltage you place across the resistor, the more current will flow through it. If you increase the resistance, the current will decrease.

    Slight correction to beenthere's formula: I = E/R, or in other words, Current = Voltage / Resistance

    What is it that you're trying to do?
     
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