1
WB JEE 2017
MCQ (More than One Correct Answer)
+2
-0
If $$\chi $$ stands for the magnetic susceptibility of a substance, $$\mu$$ for its magnetic permeability and $$\mu$$0 for the permeability of free space, then
A
for a paramagnetic substance : $$\chi $$ < 0, $$\mu$$ > 0
B
for a paramagnetic substance : $$\chi $$ > 0, $$\mu$$ > $$\mu$$0
C
for a diamagnetic substance : $$\chi $$ > 0, $$\mu$$ < 0
D
for a ferromagnetic substance : $$\chi $$ > 1, $$\mu$$ > $$\mu$$0
2
WB JEE 2016
MCQ (More than One Correct Answer)
+2
-0
A rectangular coil carrying-current is placed in a non-uniform magnetic field. On that coil, the total
A
force is non-zero
B
force is zero
C
torque is zero
D
torque is non-zero
WB JEE Subjects