Electricity is required for the nervous system to send signals throughout the body and to the brain, making it possible for us to move, think and feel. So, how do cells control electrical currents? The elements in our bodies, like sodium, potassium, calcium, and magnesium, have a specific electrical charge. Current is measured as the flow of electric charge over time through a given point in an electric circuit. One ampere is equal to 1 coulomb over 1 second. A coulomb is a standard unit of electric charge. Calculating Current Current can be calculated using Ohm's Law. Sep 17, 2019 · If you know the electric current, the flow of electric charge through an object, traveling through a circuit and how long the current is applied, you can calculate electrical charge using the equation for current Q = It in which Q is the total charge measured in coulombs, I is current in amps, and t is time that the current is applied in seconds. verb (used with object), charged, charg·ing. to impose or ask as a price or fee: That store charges $25 for leather gloves. to impose on or ask of (someone) a price or fee: He didn't charge me for it. to defer payment for (a purchase) until a bill is rendered by the creditor: The store let me charge the coat. Nov 01, 2019 · Voltage is the difference between to electical potentials. It is the “driving force” for current. Voltage is measured in Volts. If a voltage is applied to the ends of a conducting circuit, a current flows. How long does it take to charge an electric car? Well, it varies by car and charging station. The time is often quoted in hours from ’empty’ to full, but that’s not totally practical as most EV drivers never drive their car to empty. We do have a formula to figure that (below), but we’ve made a handy chart showing current electric cars (USA) with Electric power is usually sold by electric companies as the kilowatt hour (3.6 MJ) which is the product of power in kilowatts multiplied by running time in hours. Electric utilities measure power using an electricity meter, which keeps a running total of the electric energy delivered to a customer.