1
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
Needles $${N_1}$$, $${N_2}$$ and $${N_3}$$ are made of ferromagnetic, a paramagnetic and a diamagnetic substance respectively. A magnet when brought close to them will
A
attract $${N_1}$$ and $${N_2}$$ strongly but repel $${N_3}$$
B
attract $${N_1}$$ strongly, $${N_2}$$ weakly and repel $${N_3}$$ weakly
C
attract $${N_1}$$ strongly, but repel $${N_2}$$ and $${N_3}$$ weakly
D
attract all three of them
2
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
In a region, steady and uniform electric and magnetic fields are present. These two fields are parallel to each other. A charged particle is released from rest in this region. The path of the particle will be a
A
helix
B
straight line
C
ellipse
D
circle
3
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
A long solenoid has $$200$$ turns per $$cm$$ and carries a current $$i.$$ The magnetic field at its center is $$6.28 \times {10^{ - 2}}\,\,\,Weber/{m^2}.$$ Another long solenoid has $$100$$ turns per $$cm$$ and it carries a current $${i \over 3}$$. The value of the magnetic field at its center is
A
$$1.05 \times {10^{ - 2}}\,\,Weber/{m^2}$$
B
$$1.05 \times {10^{ - 5}}\,\,Weber/{m^2}$$
C
$$1.05 \times {10^{ - 3}}\,\,Weber/{m^2}$$
D
$$1.05 \times {10^{ - 4}}\,\,Weber/{m^2}$$
4
AIEEE 2006
MCQ (Single Correct Answer)
+4
-1
Which of the following units denotes the dimension $${{M{L^2}} \over {{Q^2}}}$$, where $$Q$$ denotes the electric charge?
A
$$Wb/{m^2}$$
B
Henry $$(H)$$
C
$$H/{m^2}$$
D
Weber $$(Wb)$$
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