In the following circuit diagram, what is the purpose of 1 K resistor connected to the transistor? SCH 6800 LED NPN TRANSISTOR to amplify the current to protect the transistor like a fuse to adjust voltage for transistor to amplify the voltage

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In the following circuit diagram, what is the purpose of 1 K resistor connected to the transistor?
SWITCH
1K
680R
LED
NPN
TRANSISTOR
to amplify the current
to protect the transistor like a fuse
to adjust voltage for transistor
to amplify the voltage
Transcribed Image Text:In the following circuit diagram, what is the purpose of 1 K resistor connected to the transistor? SWITCH 1K 680R LED NPN TRANSISTOR to amplify the current to protect the transistor like a fuse to adjust voltage for transistor to amplify the voltage
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