How To Find The Voltage Drop Across A Resistor In Series Circuit

By | October 15, 2021



If you’ve ever tried to build a simple series circuit, chances are you have encountered the issue of voltage drop. When electricity passes through components in a series circuit, the voltage across each component will decrease. This is called voltage drop, and it can be hard to calculate the voltage drop across a resistor within the circuit.

Luckily, there are some useful tools that can help you understand how to find the voltage drop across a resistor in a series circuit. By using these methods, you can make sure that your circuit operates correctly and efficiently.

The first tool is Ohm's Law, which states that the current flowing through a component in a series circuit is equal to the voltage of the source divided by the total resistance of the circuit. This law can be used to determine the current flowing through a resistor in a series circuit. Knowing the current, you can then find the amount of voltage drop across the resistor by multiplying the current by the resistance of the resistor.

Another method to determine the voltage drop across a resistor is to use a voltage divider. This setup is composed of two resistors placed in series, with one resistor being set up as the voltage “source” and the other as the “load.” By setting up the voltage divider with the correct resistor values, you can find the voltage drop across the load resistor.

To calculate the voltage drop accurately, it is important to consider things like the temperature coefficient of the resistors, which can affect the resistance of the components. Additionally, the wattage of the resistors should also be taken into account, as too much power can cause damage to the resistor or the rest of the components in the circuit.

Calculating the voltage drop across a resistor in a series circuit is essential for maintaining safe and efficient operation of the circuit. With a few simple techniques, such as Ohm's Law and the Voltage Divider, you can easily find the voltage drop across a resistor in a series circuit.


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