Magnetism

Question 1

magnetic field general formula for any element

Answer 1

Question 2

work done by magnetic field on a charge movine in cricular area due to the field force is?

Answer 2

0 as it is perpendicular to the motion of the charge

Question 3

field due to a finite wire

Answer 3

Question 4

field if the point if out side the wire range

Answer 4

Question 5

field if the wire is infinite

Answer 5

Question 6

field if the wire is semi infinite

Answer 6

Question 7

magnetic field of an arc

Answer 7

Question 8

magnetic field of at the centre of a circular loop

Answer 8

Question 9

magnetic field at the axis from a circular loop

Answer 9

Question 10

magnetic field at the axis from a circular loop graph

Answer 10

Question 11

force on moving charge

Answer 11

Question 12

lorentz force on a charge

Answer 12

Question 13

radius of the path formed by a charge in a field area where B is perpendicular to the motion

Answer 13

Question 14

time period of motion of charge in a field area where B is perpendicular to the motion

Answer 14

Question 15

type of motion if the magnetic field is making some angle with the ccharge

Answer 15

helical motion

Question 16

which velocity part contributes to the circular path and which contributes to the straight line part

Answer 16

V Cosθ contributes to straight line

V Sinθ contributes to the circular motion

Question 17

what will be the radius of the helical motion

Answer 17

Question 18

what will be the pitch of the helical motion

Answer 18

the speed in the horizontal direction multiple by the time period of a circular motion will be the pitch

Question 19

what if the magnetic and electric fields are in the same direction and the charge is in the same direction as the fields

Answer 19

The magnetic field won’t act! only the electric field would act

Question 20

what if the magnetic and electric fields are in the same direction and the charge is perpendicular to the fields

Answer 20

the charge will move in a helical path

with electric force acting in horizontal direction and magnetic field resulting in circular motion

Question 21

what if the magnetic and electric fields are perpendicular to each other and the charge is perpendicular to them

Answer 21

Question 22

whats ampere circuit law

Answer 22

Question 23

magnetic field due to solid cylindrical wire outside the wire

Answer 23

Question 24

magnetic field due to solid cylindrical wire inside the wire

Answer 24

Question 25

magnetic field due to solid cylindrical wire graph

Answer 25

Question 26

magnetic field due to hollow cylindrical wire outside wire

Answer 26

Question 27

magnetic field due to hollow cylindrical wire inside wire

Answer 27

Question 28

magnetic field due to hollow cylindrical wire graph

Answer 28

Question 29

for ideal solenoid! the magnetic field inside the solenoid and the magnetic field at the ends =

Answer 29

Question 30

graph for a magnetic field of an ideal solenoid

Answer 30

Question 31

force on a current-carrying wire

Answer 31

Question 32

two wires s kept parallel to each other! if carrying the same current will repel or attract?! and what if they carry opposite current

Answer 32

attract if same direction current repel in different current direction

Question 33

force per lentgh on the wires kept parallel to each other with current flowing in them

Answer 33

Question 34

magnetic moment formula

Answer 34

Question 35

magnetic moment formula

Answer 35

Question 36

current moving clockwise in a loop represents north or south pole and what if the current is moving anticlockwise

Answer 36

clockwise represent the south pole and anti-clockwise represents the north pole

Question 37

magnetic field direction in a bar magnet

Answer 37

Question 38

torque on wire in a magnetic field and having some magnetic moment

Answer 38

Question 39

potential energy of a magnetic diploe in a magnetic field

Answer 39

Question 40

shunt formula to convert galvanometer in ammeter

Answer 40

Question 41

the low value of shunt resistance is used in galvanometer to convert it into voltmeter or ammeter

Answer 41

ammeter uses low resistant of shunt voltmeter requires high value of resistance of shunt

Question 42

current in a galvanometer with angle deflected with the torque constant and magnetic field

Answer 42

Question 43

galvanometer constant

Answer 43

Question 44

current sensitivity formula

Answer 44

Question 45

what can be done to increase the magnetic field magnitude to increase the galvanometer sensitivity

Answer 45

concave pole magnet or soft iron core can be used

Question 46

voltage sensitivity formula

Answer 46