Could the Ring of Power have given the Witch King greater power and made him invincible?

 In J.R.R. Tolkien's The Lord of the Rings, the Ring of Power is a magical artifact that was created by the Dark Lord Sauron to enable him to dominate and enslave the inhabitants of Middle-earth. The Ring is able to corrupt those who wield it, and it grants them great power and influence, but at a cost.

In the story, the Ring of Power is sought by various characters, including the Witch-king of Angmar, one of Sauron's most powerful and feared servants. The Witch-king is a formidable opponent, with great strength and magical abilities, but it is not clear whether the Ring would have made him invincible.

While the Ring is able to enhance the power of those who wield it, it also has the ability to corrupt and enslave them, ultimately leading them to their own downfall. In the case of the Witch-king, it is possible that the Ring could have given him even greater power, but it is also possible that it could have led to his eventual defeat, as it did for other characters who sought to wield it.

Overall, the Ring of Power is a dangerous and seductive artifact that grants great power to those who wield it, but at a cost. It is not clear whether the Ring would have made the Witch-king invincible, as the outcome of such a scenario is purely speculative and is not addressed in the story.