DC Circuit Example

This is a collection of resistors driven by a battery which can be used as an exploration exercise in combining resistors and applying the basic tools for DC circuits such as the voltage law and the current law.

For resistor values in ohms: R1 = R2 = R3 = R4 = R5 = R6 =

The equivalent resistance is R_equivalent = Ω.

If the battery voltage is V_B = V

then the total current is I_total = A.

Having found the equivalent resistance and current, the circuit can now be completely analyzed, specifying current and voltage at any point in the circuit. With repeated applications of the voltage law, current law and Ohm's law, the voltages at the indicated voltage probe points are

and the branch currents are

Note: To avoid dealing with so many short circuits, any resistor with value zero will default to 1 when a voltage is changed. It can be changed back to a zero value if you wish to explore the effects of short circuits. Ohms and amperes are the default units, but if you put in resistor values in kilohms, then the currents will be milliamperes.