Examples of Ohm's Law in Everyday Life

Discussion in 'General Science & Technology' started by wegs, Jul 24, 2019.

  1. wegs With brave wings, she flies . . . Valued Senior Member

    Messages:
    5,566
    It's cool to see science at work in everyday appliances and utilities.

    So, I looked up the meaning of resistance in this case, and it's a measure of the opposition to current flow in an electrical circuit. Why is opposition (resistance) necessary in a circuit? How would Ohm even know to 'factor' in resistance? (what is ''resisting'' exactly, within the circuit?)

    https://studiousguy.com/examples-of-ohms-law-in-everyday-life/

    Edit - I received an answer - resistance is like friction within a system. A property that Ohm quantified. It is much clearer now, but I still wonder how resistance can be observed in a circuit?

    Edit 2: I actually understand this a bit more now, but here is a helpful link:

    https://www.allaboutcircuits.com/textbook/direct-current/chpt-1/resistance/

    This is going on when I turn on my ceiling fan? Pretty cool.
     
    Last edited: Jul 24, 2019
  2. Google AdSense Guest Advertisement



    to hide all adverts.
  3. wegs With brave wings, she flies . . . Valued Senior Member

    Messages:
    5,566
    I posted this question on another site; ''resistance'' is very interesting to me. I asked what would happen if there was no resistance? Would there be an explosion?

    I received the answer of - no, not an explosion...but here is a link to show what could happen in the event of zero resistance.

    https://en.m.wikipedia.org/wiki/Superconductivity
     
  4. Google AdSense Guest Advertisement



    to hide all adverts.
  5. mathman Valued Senior Member

    Messages:
    1,634
    Depends on the source of the electricity. Battery would burn out. House current would blow a fuse or pop circuit breaker. In practice any electric generator would be protected this way.
     
  6. Google AdSense Guest Advertisement



    to hide all adverts.

Share This Page