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 method uses the gross profit of the most recent accounting period to estimate the closing stock. For example, if last year's gross profit margins were 60 percent and sales are $10,000 in the most recent accounting period, then the gross profit is $6,000 (60 percent times $10,000).