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Lim Y K
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May i know if electromotive force (emf) moves from the positive terminal to the negative terminal or a battery through a circuit or is it from the negative terminal to positive terminal?
Lim Y K said:May i know if electromotive force (emf) moves from the positive terminal to the negative terminal or a battery through a circuit or is it from the negative terminal to positive terminal?
Electromotive force (emf) is a measurement of the energy that causes current to flow through a circuit. It can also be defined as the potential difference in charge between two points in a circuit. Electromotive force is also known as voltage, and it is measured in volts.
cheersDiscussion of EMF is usually careful to point out that its measurement requires that the generator (or battery) be on open-circuit or no-load condition, (I=0), so that the voltage you measure at the terminals is equal to the EMF. If there is current flowing, then internal resistance of the generator or motor or battery will cause the voltage you measure at the terminals to differ from the true EMF.
Electromotive force (EMF) is the energy per unit charge that is supplied by a source, such as a battery or generator, to move a charge around a complete circuit.
Electromotive force is typically measured in units of volts (V). A voltmeter is used to measure the potential difference between two points in a circuit, which is equal to the EMF.
The magnitude of electromotive force depends on the type of source and the materials used in the circuit. The design of the circuit, the temperature, and the distance between the source and the circuit can also affect the EMF.
Electromotive force and voltage are often used interchangeably, but they are slightly different concepts. EMF is the energy supplied by the source, while voltage is the potential difference between two points in a circuit.
Electromotive force is essential in many everyday devices, such as batteries, generators, and solar panels. It is also used in electronic circuits, power plants, and electric vehicles.