A particle is released from rest in a uniform electric field and then moves under the influence of the electric field. a. The particle is a proton. Which is true? Choose the best answer.  Its potential energy increases and it moves towards lower electric potential. Its potential energy decreases and it moves towards higher electric potential. Its potential energy decreases and it moves towards lower electric potential. Its potential energy increases and it moves towards higher electric potential.   b. The particle is an electron. Which is true? Choose the best answer.  Its potential energy decreases and it moves towards lower electric potential. Its potential energy increases and it moves towards lower electric potential. Its potential energy decreases and it moves towards higher electric potential. Its potential energy increases and it moves towards higher electric potential. c. The particle is a proton. What is true about the proton’s path? Choose the best answer.  The path is perpendicular to the electric field lines and perpendicular to the equipotential lines. The path is perpendicular to the electric field lines and parallel to the equipotential lines. The path is parallel to the electric field lines and perpendicular to the equipotential lines. The path is parallel to the electric field lines and parallel to the equipotential lines.

What is the value of the electrostatic potential at a distance of 0.53 Å (Angstroms) from a proton?  (If you'll remember from last week, 0.53 Å is the average distance between the proton and the electron in a hydrogen atom.)     5.12 x 1011 V     4.34 x 10-18 V     27.1 V     8.19 x 10-8 N

The Question Thor is battling the Frost Giants and he uses his hammer, Mjolnir, to zap them with lightning. Thor unleashes a bolt toward the nearest Giant. Mjolnir has an electric potential of zero and the Frost Giant has an electric potential of either +1.9 × 108 V or −1.9 × 108 V (you will decide during part 1 of the question). In order for electricity to conduct through dry air, the electric field between Thor and the Frost Giant must have a magnitude of 3.2 x 106 V m A negatively charged hydroxide ion (OH¯) in the lightning bolt travels away from Thor. OH¯ ions hold a charge of -1.6 × 10-¹⁹ C and they have a mass of 2.82 × 10-26 kg. The OH¯ ion speeds up from rest to a velocity of 6.3 × 105 m S 1. Does the electric field point from Thor toward the Frost Giant or from the Frost Giant toward Thor? Does this mean that the Frost Giant has a positive electric potential or a negative electric potential?

X 2) Four charges are arranged in the pattern shown. They have equal magnitudes of 1nC but have the signs shown. Three locations, labeled X, Y, and Z, are highlighted. 2 1 A 2 m 2 m 2 m i. The electric potential energy stored by this arrangement of charges is A. Positive Negative B. C. Zero ii. The electric potential at point Z (using the standard reference point) is A. B. A. 0 B. 1.5 V C. 4.5 V D. 6.0 V E. 12 V iii. The electric potential at point X (using the standard reference point) is 3.0 V 3.3 V C. 4.5 V D. 7.5 V E. 18 V 2 m 3 (+) 2 m 4 m 4