1
AIEEE 2006
+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
2
AIEEE 2006
+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
$$1.05 \times {10^{ - 4}}\,\,Weber/{m^2}$$
3
AIEEE 2005
+4
-1
Two thin, long, parallel wires, separated by a distance $$'d'$$ carry a current of $$'i'$$ $$A$$ in the same direction. They will
A
repel each other with a force of $${\mu _0}{i^2}/\left( {2\pi d} \right)$$
B
attract each other with a force of $${\mu _0}{i^2}/\left( {2\pi d} \right)$$
C
repel each other with a force $$_0{i^2}/\left( {2\pi {d^2}} \right)$$
D
attract each other with a force of $${\mu _0}{i^2}/\left( {2\pi {d^2}} \right)$$
4
AIEEE 2005
+4
-1
A charged particle of mass $$m$$ and charge $$q$$ travels on a circular path of radius $$r$$ that is perpendicular to a magnetic field $$B.$$ The time taken by the particle to complete one revolution is
A
$${{2\pi {q^2}B} \over m}$$
B
$${{2\pi mq} \over B}$$
C
$${{2\pi m} \over {qB}}$$
D
$${{2\pi qB} \over m}$$
EXAM MAP
Medical
NEET