1
AIEEE 2006
+4
-1
An electric dipole is placed at an angle of $${30^ \circ }$$ to a non-uniform electric field. The dipole will experience
A
a translation force only in the direction of the field
B
a translation force only in a direction normal to the direction of the field
C
a torque as well as a translational force
D
a torque only
2
AIEEE 2006
+4
-1
Two spherical conductors $$A$$ and $$B$$ of radii $$1$$ $$mm$$ and $$2$$ $$mm$$ are separated by a distance of $$5$$ $$cm$$ and are uniformly charged. If the spheres are connected by a conducting wire then in equilibrium condition, the ratio of the magnitude of the electric fields at the surfaces of spheres $$A$$ and $$B$$ is
A
$$4:1$$
B
$$1:2$$
C
$$2:1$$
D
$$1:4$$
3
AIEEE 2006
+4
-1
Two insulating plates are both uniformly charged in such a way that the potential difference between them is $${V_2} - {V_1} = 20\,V.$$ (i.e., plate $$2$$ is at a higher potential). The plates are separated by $$d=0.1$$ $$m$$ and can be treated as infinitely large. An electron is released from rest on the inner surface of plate $$1.$$ What is its speed when it hits plate $$2$$?
$$\left( {e = 1.6 \times {{10}^{ - 19}}\,C,\,\,{m_e} = 9.11 \times {{10}^{ - 31}}\,kg} \right)$$
A
$$2.65 \times {10^6}\,m/s$$
B
$$7.02 \times {10^{12}}\,m/s$$
C
$$1.87 \times {10^6}\,m/s$$
D
$$32 \times {10^{ - 19}}\,m/s$$
4
AIEEE 2005
+4
-1
Two point charges $$+8q$$ and $$-2q$$ are located at $$x=0$$ and $$x=L$$ respectively. The location of a point on the $$x$$ axis at which the net electric field due to these two point charges is zero is
A
$${L \over 4}$$
B
$$2$$ $$L$$
C
$$4$$ $$L$$
D
$$8$$ $$L$$
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