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 of 'Gross Income'. 1. An individual's total personal income before taking taxes or deductions into account. 2. A company's revenue minus cost of goods sold.Also called  gross margin  and gross profit..REAKING DOWN 'Gross Income'. 1. Your gross income is how much you make before taxes. It is the figure people are looking for when they ask how much you gross a month. 2. This is an important number when analyzing a company, it indicates how efficiently management uses labor and supplies in the production process.