1
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
The magnetic susceptibility is negative for
A
ferromagnetic material only
B
paramagnetic and ferromagnetic materials
C
diamagnetic material only
D
paramagnetic material only
2
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
A square loop ABCD carrying a current $$i$$, is placed near and coplanar with a long straight conductor XY carrying a current $$I$$, the net force on the loop will be NEET 2016 Phase 1 Physics - Moving Charges and Magnetism Question 74 English
A
$${{2{\mu _0}liL} \over {3\pi }}$$
B
$${{{\mu _0}liL} \over {2\pi }}$$
C
$${{2{\mu _0}li} \over {3\pi }}$$
D
$${{{\mu _0}li} \over {2\pi }}$$
3
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
A long straight wire of radius $$a$$ carries a steady current $$I$$. The current is uniformly distributed over its cross-section. The ratio of the magnetic fields B and B', at radial distance $${a \over 2}$$ and 2$$a$$ respectively, from the axis of the wire is
A
1
B
4
C
$${1 \over 4}$$
D
$${1 \over 2}$$
4
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language
Two identical charged spheres suspended from a common point by two massless strings of lengths $$l$$, are initially at a distance d(d < < $$l$$) apart because of their mutual repulsion. The charges begin to leak from both the spheres at a constant rate. As a result, the spheres approach each other with a velocity v. Then v varies as a function of the distance x between the spheres, as
A
v $$ \propto $$ x$$-$$1/2
B
v $$ \propto $$ x$$-$$1
C
v $$ \propto $$ x1/2
D
v $$ \propto $$ x