Over the Counter Medications Drugs that are safe and effective for use by the general public without a prescription are defined as over-the-counter (OTC) drugs. These drugs are often located on shelves in pharmacies with easy access by patients, but may also be located in non-pharmacy outlets, such as grocery stores, convenience marts and large discount retailers.
Objects simply do not acquire charges on the order of 1.00 Coulomb. In fact, more likely Q values are on the order of 10-9 or possibly 10-6 Coulombs. For this reason, a Greek prefix is often used in front of the Coulomb as a unit of charge. Charge is often expressed in units of microCoulomb (ÂµC) and nanoCoulomb (nC).
q is the potential energy per unit charge of a particle at the point r. It is called the electric potential. From Coulombâs law, the electrical potential created at a pointr by a charge Q at the origin is k Q r. If you have charges Q 1,Q 2,Â·Â·Â·at points r 1,r 2 Â·Â·Â·the total potential created at point r by them is k  Q 1 |râr 1| + Q 2 |râr 2| +Â·Â·Â·  We can use this to calculate the potential due to many distributions of charges. 4 The Unit of Electric Potential The unit of force is Newton and the unit of charge is Coulomb. The unit of electric ï¬eld is thus NCâ1. The unit of work ( or energy) is Joules , which is the same as Nm. Thus the unit of potential energy is JCâ1 = NmCâ1.This