官术网_书友最值得收藏!

Current

In a parallel circuit, current will be different in each branch. The total current of the circuit (the current coming out of the power source) will be equal to the sum of the current in each branch. This means that current coming out of the power source will equal the sum of the current running through the 220-ohm resistor branch and the 330-ohm resistor branch.

Let's look at this with Ohm's law to see how this works. To calculate current with Ohm's law we use the formula I=V/R, which means the current equals the voltage divided by the resistance. Earlier, in the resistance section, we calculated that the resistance in the circuit was 132 ohms and we know that the voltage is 9 volts, therefore, the total current will equal 9 volts/132 ohms or 0.0682 amps (68.2 milliamps).

We can also use Ohm's law to calculate the current in each branch knowing that the voltage for each branch will be the same 9 volts. The current in the branch that contains the 220-ohm resistor would be 9 volts/220 ohms or 0.0409 amps (40.9 milliamps). The current in the branch with the 330-ohm resistor would be 9 volts/330 ohms or 0.0273 amps (27.3 milliamps).

We can now add the current from the branch that contains the 220-ohm resistor to the current from the branch that contains the 330-ohm resistor to get the total current of 40.9 milliamps + 27.3 milliamps, which equals the same 68.2 milliamps coming out of the power source.

Now that we understand the difference between parallel and series circuits, there is one more concept we need to understand before we can get started building things. This concept is a voltage drop.

主站蜘蛛池模板: 南川市| 庐江县| 昌黎县| 兰考县| 东乡县| 嵊州市| 长春市| 都江堰市| 综艺| 台南县| 石家庄市| 堆龙德庆县| 札达县| 大邑县| 米林县| 绥宁县| 蓝田县| 天门市| 白城市| 佛山市| 广宗县| 彭泽县| 兴国县| 文安县| 安远县| 黄冈市| 砀山县| 临夏县| 宜黄县| 卓尼县| 洛浦县| 湖州市| 黄梅县| 三门峡市| 洱源县| 尖扎县| 邢台县| 南平市| 西乡县| 洞口县| 浦东新区|