- #1
aim1732
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Why is the emf induced in an inductor much larger when the switch connecting it to a battery is closed than when the switch is opened? Somewhere in a text I had read that di/dt is very large when an LR circuit breaks but then its value for growth and decay in an LR circuit is same---(i0R/L)e-tR/L with a corresponding plus and minus sign. Any ideas?