The output of a standard TTL NAND gate is used to pull an LED indicato – McqOptions

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1.	The output of a standard TTL NAND gate is used to pull an LED indicator LOW. The LED is in series with a 470- resistor. What is the current in the circuit when the LED is on?
A.	7.02 mA
B.	8.51 mA
C.	10.63 mA
D.	5.32 mA
Answer» B. 8.51 mA

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