Magnetism and Matter - Online Test
Q1. permanent magnets should have
Answer : Option B
Explaination / Solution:
No Explaination.
Q2. For strong electromagnets use is made of
Answer : Option B
Explaination / Solution:
No Explaination.
Q3.
The angle of dip at a location in southern India is about . Dip angle in Britain would be
Answer : Option C
Explaination / Solution:
No Explaination.
Q4. If you made a map of magnetic field lines at Melbourne in Australia, would the or of the ground?
Answer : Option C
Explaination / Solution:
No Explaination.
Q5. To increase the magnetic field of a solenoid what core material should be used ?
Answer : Option A
Explaination / Solution:
No Explaination.
Q6. If the area under the B-H curve of a material M is more, in an ac solenoid using material M
Answer : Option A
Explaination / Solution:
No Explaination.
Q7. If we wanted to cancel the Earth’s magnetic field by running an enormous current loop around the equator, which way would the current have to flow: or west to east?
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. the magnetic needle has magnetic moment d moment of inertia . It performs 10 complete oscillations in 6.70 s. Magnitude of the magnetic field is
Answer : Option D
Explaination / Solution:
No Explaination.
Q9. Assuming one unpaired electron spin per atom, saturation magnetization in a long cylinder of iron is(n for iron is atoms/m3,Bohr magneton
Answer : Option C
Explaination / Solution:
No Explaination.
Q10.
A toroid wound with 60.0 turns/m of wire carries a current of 5.00 A. The torus is iron, which has a magnetic permeability of under the given conditions. H and B inside the iron are
Answer : Option B
Explaination / Solution:
No Explaination.
