Live circuit, switch closed, load running. You put the voltmeter right across the switch: 0.00 V.

#circuitchallenge #multimeter #electronics #learnelectronics #electronicsquiz #circuittroubleshooting #electronicstechnician #benchwork

Circuit challenge 🔍 9 V battery, 470 Ω resistor, red LED. Fresh battery. Resistor measures perfect. LED tests fine out of circuit. It never lights. Why?

#circuitchallenge #electronics #LED #learnelectronics #diyelectronics #hobbyelectronics #electronicsquiz #circuittroubleshooting