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Sparky
Sparky asked in Science & MathematicsEngineering · 2 months ago

What would happen if a resistor is removed from the circuit?

A) if the 150 ohm resistor is removed

B) if the 500 ohm resistor is removed

It's a 2n2222a transistor

Update:

(picture)

Attachment image

2 Answers

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  • David
    1 month ago

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  • qrk
    Lv 7
    2 months ago

    The LED will not light if either resistor is removed.

    The 150 ohm R is a current limit for the LED (limits current to around 20mA which is way too bright for high efficiency LEDs).

    The 500 ohm R serves to limit the current limit flowing in to the base.

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