Generators, Motors, and Mutual Inductance - (Physics 3)

Another way to induce a current

To change the orientation of the loop with respect to the magnetic field

Generator

A device that does the conversion of mechanical energy used to turn the loop converted to electrical energy

Mechanical energy in commercial power plants

In the form of rotational motion

Generator usage example

Uses a turbine’s rotary motion to turn a wire loop in a magnetic field

Simple generator

The rotation of conducting loops through a constant magnetic field induces an alternating current in loops

Alternating current (ac)

An electric current that changes direction at regular intervals

Resistors can be used in either…

Alternating or direct-current applications

Resistance of a resistor

Resists the motion of charges regardless of whether they move in one continuous direction or shift direction periodically

Maximum emf

maximum emf = NAB(𝜔)

Angular frequency equation

𝜔

Sinusoidal (sine wave) variation of emf with time equation

emf = NAB(𝜔)(sine(𝜔)(t)

Slip rings