How must the output of a gate act when it is LOW in a TTL circuit?

A)
Acts as a voltage source
B)
Acts as a current source
C)
Acts as a voltage sink
D)
Acts as a current sink

Correct Answer : Option (D) :   Acts as a current sink

Explanation : If the gate output is Low in a TTL digital circuit, the gate must be capable of sinking current drawn from the input of gates. Thus, the output must act as a current sink.

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A)
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