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%.
The gross profit a business earns is the total revenue subtracted by the cost of generating that revenue. In other words, gross profit is sales minus cost of goods sold. 1  It tells you how much money a company would have made if it didnât pay any other expenses such as salary, income taxes, copy paper, electricity, water, rent, postage, furniture, software, or holiday parties for the employees.