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%.
Definition. The total revenue in an accounting period minus all expenses during the same period. If income taxes and interest are not deducted, it is called operating profit (or Loss, as the case may be).Also called earnings, net earnings, or net profit.efinition. The total revenue in an accounting period minus all expenses during the same period. If income taxes and interest are not deducted, it is called operating profit (or Loss, as the case may be).