Instead of thinking about one field changing in response to the change of the other, it is more correct to say that. whenever the magnetic field is changing, so is the electric field, and vice versa.The way these fields change is governed by Maxwell's equations.This way, we do not arrive at the confusion OP has.nstead of thinking about one field changing in response to the change of the other, it is more correct to say that. whenever the magnetic field is changing, so is the electric field, and vice versa.
Gross profit = net sales â cost of goods sold. Gross profit percentage = [(net sales â cost of goods sold)/net sales] Ã 100%.
In other words, it directly impacts risk and return. Gross profit evaluation and gross profit optimization is necessary to calculate and understand gross profit percentage, commonly referred to as gross profit margin. Gross profit margin is a company's total sales revenue minus its direct costs, divided by the total sales revenue, expressed as a percentage. Gross profit margin represents the percent of total sales revenue that the company retains after incurring direct costs. The higher the percentage, the more the company retains on each dollar of sales to service its other costs and obligations.