Voltage Equals Energy Divided By Charge
This equation can be rearranged to give energy voltage x charge.
Voltage equals energy divided by charge. The potential difference between points a and b that is the change in potential of a charge q moved from a to b is equal to the change in potential energy divided by the charge. Energy transferred 120 2 240 j this equation can be rearranged to v e q. Of energy to each coulomb of charge in an electric circuit. The voltage v in volts v is equal to the energy e in joules j divided by the charge q in coulombs c.
That s no more than a definition of the potential energy. So voltage is energy transferred divided by charge. Amps a volts v ohms. Voltage sources deliver power while resistors use power by dissipating it as heat.
The rearranged formula means we can define one volt as one. The current in amps a is equal to the voltage in volts v divided by the resistance in ohms ω. Energy is measured in joules. Power power p is a measure of the rate at which energy is delivered or used by a circuit element.
Volt joule coulomb. Thus a 9 volt battery releases 9 joules of energy for every coulomb of charge moved through a circuit. There are several equivalent ways to look at this. Electric potential is potential energy per unit charge.
V 60j 4c 15v. The word per means divided by so voltage energy charge. A 6 volt cell gives 6 joules of energy to each coulomb. Joules j volts v coulombs c volts to amps conversion.
How to convert volts to. Voltage electric potential difference electric pressure or electric tension is the difference in electric potential between two points which in a static electric field is defined as the work needed per unit of charge to move a test charge between the two points. Defined in these scientific terms 1 volt is equal to 1 joule of electric potential energy per divided by 1 coulomb of charge. V j c.
E v x q. The energy in joules j is equal to the voltage in volts v times the electric charge in coulombs c. In the international system of units the derived unit for voltage potential difference is named volt. Potential difference is commonly called voltage represented by the symbol.
The current is equal to the electromotive force of the source divided by the total circuit resistance. One is to say that for any conservative force mathbf f one can define the potential energy ep as an associated potential field such as mathbf f frac partial ep partial r or maybe more formally mathbf f nabla ep. The potential difference between points a and b v b v a defined to be the change in potential energy of a charge q moved from a to b is equal to the change in potential energy divided by the charge potential difference is commonly called voltage represented by the symbol δv. What is the voltage supply of an electrical circuit with energy consumption of 60 joules and charge flow of 4 coulombs.