What is the difference between an induced emf and a back emf?

jayjay112 · Apr 26, 2009

What is the difference between an induced emf and a back emf?

(i) i thought they were the same thing? . . .. .

rl.bhat · Apr 26, 2009

If an open coil is subjected to a variable magnetic field, at the ends of the coil a potential difference is induced which is called induced emf.
If a coil is connected to an emf source and switched on, the rising current will produced an variable magnetic field which in turn produces an emf. It is called back emf.

jayjay112 · Apr 26, 2009

rl.bhat said:

If an open coil is subjected to a variable magnetic field, at the ends of the coil a potential difference is induced which is called induced emf.
If a coil is connected to an emf source and switched on, the rising current will produced an variable magnetic field which in turn produces an emf. It is called back emf.

Thank you for clearing that up!

What is the difference between an induced emf and a back emf?

Discussion

A very simple moments question

Expansion or compression -- which is more energy efficient?

What force causes precession?

Simple kinematics problem — falling from a geostationary satellite

Why does a fan cool you in a sealed room if it adds heat?

Insights Revisiting the Velocity-Time Function

Insights Remote Operated Gate Control System

Insights AI Enriched Problem Solving

Insights Thinking Outside The Box Versus Knowing What’s In The Box

Insights Why Entangled Photon-Polarization Qubits Violate Bell’s Inequality

Insights Quantum Entanglement is a Kinematic Fact, not a Dynamical Effect

What is the difference between an induced emf and a back emf?

Discussion

Similar threads