In a certain region, magnetic field is directed vertically downward. If a plane flies due South, which part of the plane will be negatively charged?

Explanation

To determine which part of the plane will be negatively charged, we apply the right-hand rule. Point your fingers in the direction of the plane's velocity (South) and curl them toward the direction of the magnetic field (downward). Your thumb will then point toward the East, indicating the direction of the force acting on positive charges.Since electrons are negatively charged, they will be pushed in the opposite direction (West). Therefore, the right wingtip of the plane will accumulate negative charge due to this force.Other options are incorrect because the front, back, and left wingtip of the plane do not align with the force direction affecting negative charges, which ultimately leads to the right wingtip being the only area where a negative charge accumulates.