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LEDs glow even with very small currents. While connecting an LED in a circuit, the LONGER lead must be connected to the:
ANegative terminal
BThe wire only, not the battery
CPositive terminal
DAny terminal
Answer & Solution
Correct answer: C. Positive terminal
LEDs are polarity-sensitive. The longer of its two leads is the positive terminal and must be connected to the positive terminal of the battery; the shorter lead goes to the negative terminal. Reversing the connection leaves the LED unlit.
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