Debugging Methodology — question 1 of 10
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You build a simple circuit: a battery, a switch, a resistor, and an LED in series. You close the switch and the LED does not light. You have three candidate explanations: dead battery, dead LED, or an open connection somewhere in the loop. Walk me through how you'd decide which one it is — what you check first, in what order, and what specific measurement would rule each one out.