A: nothing should happen since a 1N4001 is capable to sustain 100v in the reverse direction. 52v is within the 100v reverse breakdown voltage.

It's 1N4001 Maximum reverse voltage 50 volts, 1 amp The last digit indicates the voltage. To replace a 1N4001, you could safely use any of the diodes in that series. 1N4001 = 50 volts 1N4002 = 100 volts 1N4003 = 200 volts 1N4004 = 400 volts 1N4005 = 600 volts 1N4006 = 800 volts 1N4007 = 1000 volts The 1N4000 series diodes are rectifier diodes. They're used for converting AC voltage into DC voltage. And frankly, I can't think of a reason why I'd choose the 1N4001 when the more-versatile (as in you can use it in more places) 1N4003 is the same price.

There is insufficient information in the question to properly answer it. Please restate the question.

A; The 1N4xxx series of rectifier diodes are specified as 1 amp forward conduction. the last number signify the maxi mun reverse voltage it can sustain without breakdown.

IN IN = 1N: Refers to the number of junctions (1N= 1 junction).