Using Ohm's Law, (V = IR), rearranged to (R = V/I), Alex calculated the necessary resistance. The voltage drop across the resistor would be (9V - 2V = 7V), and with (I = 15mA = 0.015A), he found (R = 7V / 0.015A = 466.67\Omega).
First, he determined the specifications of the LED: it required 2V and 15mA to operate correctly. With a 9V battery as the power source, Alex calculated the required resistance to drop the voltage from 9V to 2V while limiting the current to 15mA. circuiti elettrici alexander sadiku pdf 11 repack
It was an ordinary day at the local university's engineering lab. Students were bustling about, engaged in various projects. Among them was Alex, a diligent second-year student, grappling with the complexities of electrical circuits. His course textbook, "Fundamentals of Electric Circuits" by Charles K. Alexander and Matthew N.O. Sadiku, lay open on his workbench, specifically the chapter on circuit analysis techniques. Using Ohm's Law, (V = IR), rearranged to