What is electric current? 1. the number of electric charges that pass a given point

2. a material's opposition to the flow of electric charge

3. the rate at which electric charges pass a given point

4. the amount of work to move a unit of electric charge between two points

im pretty sure its b

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".