State whether the following statements are true or false:

The main difference between EMF and potential difference is that EMF is the difference in potential between the two electrodes of a cell or battery whereas, the potential difference is the difference between any two sites in a closed circuit.

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True

False

answer is A.

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Detailed Solution

The given statement is true.
Concept- Electromotive force is the greatest voltage between a battery's terminals while no current is flowing, and potential difference is a measure of energy between any two locations in a circuit.
Voltage across a battery's terminals is known as potential difference, whereas the potential difference between a battery's terminals when no current is flowing through an external circuit and when the circuit is open is known as electromotive force.
Electromotive force and potential difference are both measured in volts (V), with electromotive force marked by the letter "E" and potential difference by the letter "V".
Potential difference calculation formula:

where

is the potential difference,

is current and

is resistance.
There are two main formulas for calculating electromotive force i.e.:
First formula is:

where

is the electromotive force.

is work done in takina a unit charae and

is the charge of the circuit.
Second formula is:

where

is electromotive force,

is potential difference,

is current,

is load resistance and

is internal resistance.
Electromotive force does not depend on the resistance of the circuit, whereas potential difference is directly reliant on the resistance between the two sites.
When there is no current flowing through the battery, electromotive force is still present even though there is no potential difference across the conductor. Electromotive force essentially transmits current both inside and outside of the cell, whereas potential difference moves current between two points inside the cell.
Hence, the given statement is true.

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