#1
Which material is commonly used as a permanent magnet?
1 answered
#2
In which direction does a magnetic field line inside a bar magnet point?
1 answered
#3
Which of the following is a characteristic of ferromagnetic materials?
1 answered
#4
In which direction does the magnetic field lines outside a bar magnet point?
3 answered
#5
What is the phenomenon where a material loses its magnetism when the external magnetic field is removed?
2 answered
#6
What is the relationship between the magnetic field and the current in a straight current-carrying wire?
1 answered
#7
What is the SI unit of magnetic flux density?
1 answered
#8
Which law describes the force between two magnetic poles?
#9
What is the magnetic moment of a current loop with area A carrying a current I?
#10
What is the relationship between the strength of the magnetic field and the distance from a magnetic pole?
#11
What happens to the direction of induced current when a magnet is moved into a coil?
#12
What is the unit of magnetic dipole moment?
#13
Which type of magnetism is exhibited by materials like aluminum and oxygen?
#14
What happens to the magnetic field strength when a current-carrying wire is formed into a loop?
#15
Which electromagnetic phenomenon is responsible for the Earth's magnetic field?
#16
Which of the following materials has the highest magnetic permeability?
#17
Which law governs the force experienced by a charged particle moving in a magnetic field?
#18
What is the magnetic field inside a solenoid with a current flowing through it?
#19
What effect does heating have on the magnetic properties of a ferromagnetic material?
#20