1
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
A short bar magnet of magnetic moment 0.4 J T$$-$$1 is placed in a uniform magnetic field of 0.16 T. The magnet is in stable equilibrium when the potential energy is
A
0.064 J
B
$$-$$ 0.064 J
C
zero
D
$$-$$ 0.082 J
2
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
A square loop, carrying a teady current $$I$$, is placed in a horizontal plane near a long straight conductor carrying a steady current $$I$$1 at a distance d from the conductor as shown in figure. The loop will experience
AIPMT 2011 Mains Physics - Moving Charges and Magnetism Question 49 English
A
a net attractive force towards the conductor
B
a net repulsive force away from the conductor
C
a net torque acting upward perpendicular to the horizontal plane
D
a net torque acting downward normal to horizontal plane
3
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
Charge q is uniformly spread on a thin ring of radius R. The ring rotates about its axis with a uniform frequency $$f$$ Hz. The magnitude of magnetic induction at the center of the ring is
A
$${{{\mu _0}qf} \over {2\pi R}}$$
B
$${{{\mu _0}qf} \over {2R}}$$
C
$${{{\mu _0}q} \over {2fR}}$$
D
$${{{\mu _0}q} \over {2\pi fR}}$$
4
AIPMT 2011 Mains
MCQ (Single Correct Answer)
+4
-1
In the circuit shown in the figure, if the potential at point A is taken to be zero, the potential at point B is

AIPMT 2011 Mains Physics - Current Electricity Question 79 English
A
+1 V
B
$$-$$1 V
C
+2 V
D
$$-$$2 V
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