Q1. The electrical potential of the ground was measured at the top off a hill. If the height of the hill is 20 meters above the level of the surrounding plain, what will be the measured voltage?
Q2. Which of the following best describes the electric field vectors above a flat plain at the Earth's surface?
a) Parallel to the ground and pointing norht
b) Parallel to the ground and pointing south
c) Perpendicular to the ground and pointing upward
d) Perpendicular to the ground and pointing downward