In a functional circuit containing this gate, the output will be 0 only when all inputs are 0.

In a functional circuit containing this gate, the output will be 0 only when all inputs are 0.

• A. Only when all inputs are 0
• B. If any input is 1
• C. Only when all inputs are 1
• D. The output is always 1

Answer: (A)

The key idea is how an OR gate behaves. An OR gate outputs a 1 if any input is 1, and it outputs a 0 only when all inputs are 0. So the statement “output will be 0 only when all inputs are 0” matches exactly the OR gate’s behavior. That means the described gate is functioning such that the only time the output is 0 is when every input is 0. Briefly, if any input is 1, the output becomes 1. The other options don’t fit: if any input is 1, the output isn’t 0; if all inputs were 1, the output would be 1; the output isn’t always 1 because it can be 0 when every input is 0.

The key idea is how an OR gate behaves. An OR gate outputs a 1 if any input is 1, and it outputs a 0 only when all inputs are 0. So the statement “output will be 0 only when all inputs are 0” matches exactly the OR gate’s behavior. That means the described gate is functioning such that the only time the output is 0 is when every input is 0.

Briefly, if any input is 1, the output becomes 1. The other options don’t fit: if any input is 1, the output isn’t 0; if all inputs were 1, the output would be 1; the output isn’t always 1 because it can be 0 when every input is 0.