LED The potential drop across a glowing LED is about 1.2 V. In Figure 29-20, the potential drop

step 1 In this problem, 55, an LED is connected like this as shown in the circuit and also a resistance

LED The potential drop across a glowing LED is about 1.2 V....

LED The potential drop across a glowing LED is about $1.2 \mathrm{V}$. In Figure $29-20,$ the potential drop across the resistor is the difference between the battery voltage and the LED's potential drop. What is the current through each of the following? a. the LED b. the resistor (FIGURE CAN'T COPY)

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Key Concepts

LED Forward Voltage

LED forward voltage is the specific voltage drop across a light-emitting diode when it is operating in its conducting state. This value is intrinsic to the particular type of LED and is essential in designing circuits, as it determines how much of the source voltage is available for other circuit components.

Series Circuit

A series circuit is one in which all components are connected one after the other, ensuring that the same current flows through each component. This means that any current calculated for one element, such as the resistor, is identical to the current flowing through the LED, making the analysis straightforward.

Ohm's Law

Ohm's Law is a fundamental relationship in electronics that relates voltage (V), current (I), and resistance (R) through the formula V = I * R. It is used to determine current, voltage, or resistance in a circuit when the other two quantities are known, and is crucial for calculating the current through a resistor when the voltage drop across it is known.

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