Physics 1402A/B Lecture 1: Coulomb's Law

The direction of the electric field shown in each part of Figure 24.5 is produced by the charge distribution in the wire. Justify the direction shown in each part using coulombs law and definition of E=F/q, where q is a positive text charge.

Batteries power much of our modern mobile lifestyle. AA batteries are often rated in units of milliampere hours (mAh). This unit is actually a measure of the charge that the battery contains, and may be converted directly to Coulombs by the formula 1 mAh = 3.6 C. How many Coulombs of charge are contained in a AA battery rated at 1500 mAh?

1. Compute the time requied to pass 36,000 coulombs of charge through an electroplating bath using a current 5 amps