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%.
Gross profit is also referred to as gross margin or gross income. Understanding gross profit is useful in providing a snapshot of how effectively and efficiently a company&#039;s management team manages the resources and expenses directly associated with manufacturing or creating their products and services.et profit, or net income, is a company&#039;s total earnings after subtracting all its expenses from its total sales and other income for a specific period of time. Typically, net profit is measured on a quarterly or annual basis.