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Question

Why is the longer wire of an led bulb connected to the positive terminal of the cell or battery(why can't it be connected to the negative terminal)?


Solution

Dear student it is not longer wire it is the longer part of led which is connected to positive terminal because the longer part of led is positive part. And led will glow only if it forward biased  and led will be forward biased when positive part is connected to positive  part and negative part is connected to negative. In led longer part is positive and shorter part is negative

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