I you have already made the assumption that the fuse burns consistently throughout it’s length, as you need to assume for your answer, then just take one fuse and measure 3/4 of it, and burn it to that point.
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I you have already made the assumption that the fuse burns consistently throughout it’s length, as you need to assume for your answer, then just take one fuse and measure 3/4 of it, and burn it to that point.