Which wiring arrangement realizes an OR function in relay logic?

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Multiple Choice

Which wiring arrangement realizes an OR function in relay logic?

In relay logic, the OR function is realized by wiring the input contacts in parallel. When each input is connected through a normally open contact, closing either input creates a path from the power source to the output coil. That means the output energizes if any one of the inputs is active, which is the essence of OR. If both inputs are active, the coil still energizes, which matches OR behavior exactly. Wiring the contacts in series would require both inputs to be active (an AND function). The other options describe different configurations that invert or combine logic in ways that don’t produce a simple OR.

In relay logic, the OR function is realized by wiring the input contacts in parallel. When each input is connected through a normally open contact, closing either input creates a path from the power source to the output coil. That means the output energizes if any one of the inputs is active, which is the essence of OR. If both inputs are active, the coil still energizes, which matches OR behavior exactly. Wiring the contacts in series would require both inputs to be active (an AND function). The other options describe different configurations that invert or combine logic in ways that don’t produce a simple OR.

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