1
AIPMT 2009
+4
-1
A rectangular, a square, a circular and an elliptical loop, all in the (x-y) plane, are moving out of a uniform magnetic field with a constant velocity. $$\overrightarrow V = v\widehat i$$. The magnetic field is directed along the negative z axis direction. The induced emf, during the passes of these loops, out of the field region, will not remain constant for
A
The circular and the elliptical loops
B
only the ellliptical loop
C
any of the four loops
D
the rectangular, circular and elliptical loops
2
AIPMT 2009
+4
-1
A conducting circular loop is placed in a uniform magnetic field 0.04 T with its plane perpendicular to the magnetic field. The radius of the loop starts shrinking at 2 mm/s. The induced emf in the loop when the radius is 2 cm is
A
4.8$$\pi$$$$\mu$$V
B
0.8$$\pi$$$$\mu$$V
C
1.6$$\pi$$$$\mu$$V
D
3.2$$\pi$$$$\mu$$V
3
AIPMT 2008
+4
-1
A long solenoid has 500 turns. When a current of 2 ampere is passed through it, the resulting magnetic flux linked with each turn of the solenoid is 4 $$\times$$ 10$$-$$3 Wb. The self-inductance of the solenoid is
A
1.0 henry
B
4.0 henry
C
2.5 henry
D
2.0 henry
4
AIPMT 2008
+4
-1
A circular disc of radius 0.2 meter is placed in a uniform magnetic field of induction $${1 \over \pi }\left( {{{Wb} \over {{m^2}}}} \right)$$ in such a way that its axis makes an angle of 60o with $$\overrightarrow B .$$ The magnetic flux linked with the disc is
A
0.08 Wb
B
0.01 Wb
C
0.02 Wb
D
0.06 Wb
EXAM MAP
Medical
NEET