[b]1. Consider point a which is 70 cm north of a -4.2 µC point charge, and point b which is 74 cm west of the charge (Fig. 17-23).
(a) Determine Vba = Vb - Va.
(b) Determine Eb - Ea.
Magnitude
Direction (counterclockwise from east is positive)
[b]2. Vb-Va=(EPEb/q)-(EPEa/q)
[b]3...
A lightning flash transfers 4.2 C of charge and 4.5 MJ of energy to the Earth.
(a) Across what potential difference did it travel?
(b) How much water could this boil and vaporize, starting from room temperature?
[SOLVED] potential difference
Consider point a which is 70 cm north of a -4.2 µC point charge, and point b which is 74 cm west of the charge (Fig. 17-23).
Figure 17-23.
(a) Determine Vba = Vb - Va.
V
(b) Determine Eb - Ea.
Magnitude
N/C
Direction
°...