1
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
2
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
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
In an a.c. circuit the e.m.f. ($$\varepsilon $$) and the current

(i)  at any instant are given respectively by
$$\varepsilon $$ = E0sin$$\omega $$t,   $$i$$ = $$I$$0sin($$\omega $$t $$-$$ $$\phi $$)

The average power in the circuit over one cycle of a.c. is
A
$${{{E_0}{I_0}} \over 2}\cos \phi $$
B
$${{E_0}{I_0}}$$
C
$${{{E_0}{I_0}} \over 2}$$
D
$${{{E_0}{I_0}} \over 2}\sin \phi $$
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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