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%.
A company's total revenue (equivalent to total sales) minus the cost of goods sold. Gross profit is the profit a company makes after deducting the costs associated with making and selling its products, or the costs associated with providing its services.ross profit will appear on a company's income statement or can be calculated with this formula: Gross profit = revenue-cost of goods sold. Also called gross margin, sales profit and gross income. Next Up.