What is electromotive force and its applications?
Understand the Problem
The provided text explains the concept of electromotive force (EMF), its applications in devices like generators and batteries, and its relation to circuit parameters using the equation V + Ir. It covers the definition, functionality, and the mathematical relationship involving EMF.
Answer
Electric potential that drives the flow of electric current, produced by electrochemical cells or changing magnetic fields.
Electromotive force (emf) is the electric potential produced by either an electrochemical cell or by changing the magnetic field. It drives the flow of electric current in a circuit and is measured in volts. Its applications include power generation and battery operation.
Answer for screen readers
Electromotive force (emf) is the electric potential produced by either an electrochemical cell or by changing the magnetic field. It drives the flow of electric current in a circuit and is measured in volts. Its applications include power generation and battery operation.
More Information
Electromotive force is often abbreviated as emf and is measured in volts (V). It plays a crucial role in the operation of batteries, generators, and other energy sources.
Tips
Students often confuse emf with actual physical force; it is, in fact, a potential difference.
Sources
- Electromotive Force - Definition, Formula, Unit, Difference - BYJU'S - byjus.com
- Electromotive force - Wikipedia - en.wikipedia.org
- Electromotive Force (EMF) - Definition & Examples - CrossCo - crossco.com
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