BY saying that potential difference between two points is V, we mean that V Joule of work is to be done in moving 1 C charge between those two points.

Potential difference is the energy used between two points in a circuit, therefore it is measured between two points either side of a component. We describe this as the potential difference measured across a component.

Ans: When 1 Joule of work is done to move a charge of amount 1 Coulomb from one place to another, then it is said that the potential difference between the two points is 1 Volt (V).

The energy given to each coulomb of charge is equal to the amount of work required to move it.

When a battery is connected in an open circuit means that the current is zero, resistance becomes infinite and the terminal voltage difference seen in the circuit is equal to the emf of the battery. If we take a wire of zero resistance, then the potential at all points will be the same.

Therefore, potential difference across points A and B is 0.5V. Hence, the correct option is D.

In other words, 1 Volt equals 1 Ampere times 1 Ohm, or commonly V = I*R. Ohm’s Law states that for a linear circuit the current flowing through it is proportional to the potential difference across it so the greater the potential difference across any two points the bigger will be the current flowing through it.

(a) Potential difference 1 volt means the amount of work done when a unit charge moves from one point to the other point in an electric field.

Answer: The required work done to move an electron through a potential difference of 3 volts is 4.80×10⁻¹⁹ J.

volts

Electric potential difference, also known as voltage, is the external work needed to bring a charge from one location to another location in an electric field. Electric potential difference is the change of potential energy experienced by a test charge that has a value of +1 .

Voltage

Electrical potential difference is the difference in the amount of potential energy a particle has due to its position between two locations in an electric field. This important concept provides the basis for understanding electric circuits.

We got a negative potential, which means as we go from A to B the potential decreases. In the second case, B is our initial potential, and A is our final potential. So, the potential difference is going to be 57.6-34.2=+23.4 V. We have a positive potential, or as we go from B to A the potential increases.

The current in a circuit is directly proportional to the electric potential difference impressed across its ends and inversely proportional to the total resistance offered by the external circuit. The greater the battery voltage (i.e., electric potential difference), the greater the current.

The cell potential, Ecell, is the measure of the potential difference between two half cells in an electrochemical cell. The potential difference is caused by the ability of electrons to flow from one half cell to the other.

The difference between electrode potentials of two electrodes of electrochemical cell when no current is drawn from the cell is known as ‘Electromotive Force (EMF)’ of a cell, while the difference between the electrode potential of two electrodes when the cell is sending current through the circuit is called ‘Cell …

∆V

In parallel circuits: the total current supplied is split between the components on different loops. potential difference is the same across each loop. the total resistance of the circuit is reduced as the current can follow multiple paths.

Voltage, also sometimes called potential difference or electromotive force (EMF), refers to the amount of potential energy the electrons have in an object or circuit. This flowing electric charge is typically carried by moving electrons, in a conductor such as wire; in an electrolyte, it is instead carried by ions.

When a voltage is connected across a wire, an electric field is produced in the wire. Metal wire is a conductor . Some electrons around the metal atoms are free to move from atom to atom. This causes a difference in energy across the component, which is known as an electrical potential difference (p.d.)

Potential difference between any two points is defined as the amount of work done in moving a unit charge from one point to another.

Battery

When two or more components are connected in series, the total potential difference of the supply is shared between them. This means that if you add together the voltages across each component connected in series, the total equals the voltage of the power supply.