Direct Current Circuit Examples. Suppose three resistors r 1 r 2 and r 3 are connected in parallel across a voltage source of v volt as shown in the figure. The current flowing through each resistor in a parallel circuit is different depending on the resistance.
Parallel dc circuit examples. The history of electricity starts more than two thousand years ago with the greek philosopher thales being the earliest known researcher into electricity. Suppose three resistors r 1 r 2 and r 3 are connected in parallel across a voltage source of v volt as shown in the figure.
For example we assume that a aa battery provides 1 5v which can be described in mathematical terms as.
If a more complex connection of resistors is a combination of series and parallel it can be reduced to a single equivalent resistance by identifying its various parts as series or parallel reducing each to its equivalent and continuing. I direct current dc modern life could not exist if it were not for electricity and electronics. Voltage and current can vary over time so long as the direction of flow does not change. However we cannot take the value of 9 volts and divide it by 3k 10k or 5k ω to try to find a current value because we don t know how much voltage is across any one of those resistors individually.
