Magnetism Flashcards
magnetic field general formula for any element
work done by magnetic field on a charge movine in cricular area due to the field force is?
0 as it is perpendicular to the motion of the charge
field due to a finite wire
field if the point if out side the wire range
field if the wire is infinite
field if the wire is semi infinite
magnetic field of an arc
magnetic field of at the centre of a circular loop
magnetic field at the axis from a circular loop
magnetic field at the axis from a circular loop graph
force on moving charge
lorentz force on a charge
radius of the path formed by a charge in a field area where B is perpendicular to the motion
time period of motion of charge in a field area where B is perpendicular to the motion
type of motion if the magnetic field is making some angle with the ccharge
helical motion
which velocity part contributes to the circular path and which contributes to the straight line part
V Cosθ contributes to straight line
V Sinθ contributes to the circular motion
what will be the radius of the helical motion
what will be the pitch of the helical motion
the speed in the horizontal direction multiple by the time period of a circular motion will be the pitch
what if the magnetic and electric fields are in the same direction and the charge is in the same direction as the fields
The magnetic field won’t act! only the electric field would act
what if the magnetic and electric fields are in the same direction and the charge is perpendicular to the fields
the charge will move in a helical path
with electric force acting in horizontal direction and magnetic field resulting in circular motion
what if the magnetic and electric fields are perpendicular to each other and the charge is perpendicular to them
whats ampere circuit law
magnetic field due to solid cylindrical wire outside the wire
magnetic field due to solid cylindrical wire inside the wire
magnetic field due to solid cylindrical wire graph
magnetic field due to hollow cylindrical wire outside wire
magnetic field due to hollow cylindrical wire inside wire
magnetic field due to hollow cylindrical wire graph
for ideal solenoid! the magnetic field inside the solenoid and the magnetic field at the ends =
graph for a magnetic field of an ideal solenoid
force on a current-carrying wire
two wires s kept parallel to each other! if carrying the same current will repel or attract?!
and what if they carry opposite current
attract if same direction current
repel in different current direction
force per lentgh on the wires kept parallel to each other with current flowing in them
magnetic moment formula
magnetic moment formula
current moving clockwise in a loop represents north or south pole and what if the current is moving anticlockwise
clockwise represent the south pole
and anti-clockwise represents the north pole
magnetic field direction in a bar magnet
torque on wire in a magnetic field and having some magnetic moment
potential energy of a magnetic diploe in a magnetic field
shunt formula to convert galvanometer in ammeter
the low value of shunt resistance is used in galvanometer to convert it into voltmeter or ammeter
ammeter uses low resistant of shunt
voltmeter requires high value of resistance of shunt
current in a galvanometer with angle deflected with the torque constant and magnetic field
galvanometer constant
current sensitivity formula
what can be done to increase the magnetic field magnitude to increase the galvanometer sensitivity
concave pole magnet or soft iron core can be used
voltage sensitivity formula
