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%.
Cost of Good Sold & Gross Profit. In accounting, gross profit or sales profit is the difference between revenue and the cost of making a product or providing a service before deducting overhead, payroll, taxation, and interest payments. Note that this is different from operating profit (earnings before interest and taxes).