Ask Me Help Desk

Ask Me Help Desk (https://www.askmehelpdesk.com/forum.php)
-   Physics (https://www.askmehelpdesk.com/forumdisplay.php?f=258)
-   -   Electrical current flow (https://www.askmehelpdesk.com/showthread.php?t=4142)

  • Aug 25, 2004, 07:48 AM
    wetona
    Electrical current flow
    Electrical current through wires is similar to water flowing through pipes. Using this analogy make a statement about how electrical current flow is related to the resistance of the wire it flows through.


    PLEASE HELP!?
  • Oct 16, 2004, 03:37 PM
    urmod4u
    The property of water that is comparable to the resistance of a wire, is the viscosity of the water.
    Note that the viscosity is a property of the water (the current) and that the resistance is a property of the material the wire is made of (the conductor). So the analogy is not quite right.
    But it is correcter than the pipe's diameter - which rather compares to the wire's diameter - both having their influence on the resistance.
    High viscosity (electrical: resistance) will cause low current for a given pressure (electrical: voltage).
    Hot water has lower viscosity than cold water, it flows easier (=faster, more current). That is, BTW, why the pitch of the sound of flowing water from a hot water tap changes when the hot water arrives.

  • All times are GMT -7. The time now is 01:09 PM.