lesson 24.2 notes ppt and solving (1)

increas current,more lloops,

electric motors slide 6

curent carying wire magnet does force on the loop n does half rotation , and to continue u have to reverse the current

it converts electrical energy into mechanical

memorize shape

to strnegthen it: add more current, more loops, less psacing, syronger magnet

split ring commuattor does reverses the current direction to maintain rotation.

galvanometer:

purpoise: to measure small current

doesnt rveese current

current caruing wire , magnet does force, dies hald roation , only one doesnt rveersc cyrrent

used as ammeter(with shunt_low reisstant- parralel) n voltameter(with multiplier - highrsistance- put in seriies)

slide 8

angle 90 no

force done on a particle synchrtoome

know what it does

magnet are along the path to keep the particles movingg in a circlular path

needs very high volt