A LED takes a current of \(12.5 mA\) when the voltage across it is 2 V. Draw a suitable circuit and calculate the value of the series resistor needed to operate the LED from a \(9 V\) battery.

In other words, the current is the same at all points in a series circuit. When resistors are ... potential difference across them. In order to calculate the total resistance of two resistors ...

Delve into the fascinating world of resistors, a key component in nearly every electronic device we use today. Resistors are crucial for controlling the flow of electrical current in a circuit, ...