Lis asked in Science & MathematicsPhysics · 10 years ago

what is external resistance of a circuit?

More specifically, what is meant by the equivalent external resistance of a circuit?

2 Answers

  • Mark J
    Lv 4
    10 years ago
    Favorite Answer

    When voltage is applied to a circuit, current will flow. More voltage results in more current. This ratio is called the resistance and is described by Ohm's Law:

    V = I * R

    R = V / I

    V=voltage, I=current, and R=resistance

    A circuit can consist of multiple devices in a variety of configurations: series, parallel, and combinations.

    When looking from the "outside" of the circuit, it is often desirable to get back to basics. If a voltage is applied, how much current will flow? This is the equivalent external resistance.

  • 4 years ago

    External Resistance Definition

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