1
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
A galvanometer of resistance 50 $$\Omega $$ is connected to a battery of 3 V along with a resistance of 2950 $$\Omega $$ in series. A full scale deflection of 30 divisions is obtained in the galvanometer. In order to reduce this deflection to 20 divisions, the resistance in series should be
A
$$6050$$ $$\Omega $$
B
$$4450\,\Omega $$
C
$$5050\,\Omega $$
D
$$5550\,\Omega $$
2
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Curie temperature above which
A
paramagnetic material becomes ferromagnetic material
B
ferromagnetic material becomes diamagnetic material
C
ferromagnetic material becomes paramagnetic material
D
paramagnetic material becomes diamagnetic material
3
AIPMT 2008
MCQ (Single Correct Answer)
+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
MCQ (Single Correct Answer)
+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
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