The time it takes to reheat a baked potato in a microwave can vary depending on the size and power of the microwave, as well as the initial temperature of the potato. As a general guideline, it usually takes around 2-4 minutes to reheat a baked potato in a microwave.
To ensure even reheating, it's essential to poke several holes in the potato with a fork before microwaving it. This helps the steam escape and prevents the potato from becoming soggy.
Start by placing the potato on a microwave-safe plate and cover it with a microwave-safe lid or microwave-safe wrap to retain moisture. Then, microwave the potato on high power for 1-2 minutes. After that, flip the potato over, and continue microwaving for an additional 1-2 minutes. Check if the potato is thoroughly heated by inserting a fork or knife into the center; it should come out hot.
Keep in mind that microwaves can vary in power, so adjust the cooking time accordingly. It's better to check the potato's temperature periodically during reheating to avoid overcooking and drying it out.