Review Electromagnetic Induction

Discovery in Oestedland...

To review the concepts on electromagnetic induction discussed yesterday, while waiting for others, let's start reading the comics strip then answer the questions related to it.

• is the characteristic of any energy source capable of driving electric charge around a circuit

• abbreviated E but also, popularly, as emf

not really a force

for emf vs voltage​ visit https://www.vedantu.com/physics/difference-between-emf-and-voltage

​EMF

instrument for measuring a small electrical current or a function of the current by deflection of a moving coil

since the induced current can be really little

Galvanometer

​

DEFINITION

the production of an electromotive force across an electrical conductor in a changing magnetic field

So it doesn't matter which moves as long as there is changes in the magnetic field.

Producing more induced current

1. ​Using a STRONGER magnet

2. Moving the magnet/wire FASTER

3. Increasing the length of the wire exposed to the changing magnetic field (increasing the number of loops of increasing the area)​

Electromagnetic Induction | Robotics

​a quantitative relationship between a changing magnetic field and the electric field created by the change​

​from: britannica.com

developed on the basis of experimental observations made in 1831 by the English scientist Michael Faraday

​from: britannica.com