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    diode circuit diagrams acc98

    when you are asked to draw a circuit diagram with a diode why is there usually resistor drawn before it, this is seen in 2011 Q11 part (g)

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      keenan1

      so the resistor doesnt blow/break,resistor limits the amount of current and diodes only need a tiny bit on current

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      acc98

      oh right okay, would you ever be asked what value resistor to put before a certain diode given the junction voltage of the diode? i assume not, i haven't heard of a Q like that before

      thank you!

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      Michael McSweeney

      Not in a Physics questions, that's more relevant in technology

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      acc98

      great, thanks so much!!

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      Me

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