Electromagnetism Flashcards
explain right hand rule I? what is it used for?
for direction of magnetic field
for conventional current= right hand
electronic current= left hand
what happens when an electric current is passed through solenoid or coil? where is the field stronger and weaker? how to find its direction?
pg 133
in FCCCMF when is the force max. , reduced and 0 which force.
F is directly proportional to? mathematically?
explain the equation
the force that is experienced by the wire
derive the eq. for max magentic force?
unit of MF?
define 1 (T)
direction?
pg 135
why a and c dont experiance any MForce? explain with formula? max magnetic force are experianced by? explain with formula?
how is turning effect then produced?
draw the diagram of torque on current carrying coil?
what is electric motor? on what principle does it work? examples?
what is armature? where is commutator attached? carbon brushes? how is power supply connected?
what does a commutator do? how?
what did Michael Faraday show us?
what is induced current? how is this current generated?
when does the magnet and coil show deflection or no?
describe an experiment to show how changing MF can induce emf in a circuit?
factors affecting magnitude of induced emf?
4
what is electricity generator? principle?
how does AC generator works?
AC & DC similarities and differences?
