2
MCQ (Single Correct Answer)
A point positive charge is brought near an isolated conducting sphere (figure). The electric field is best given by
A
B
C
D
3
MCQ (Single Correct Answer)
The electric flux through the surface
A
in Fig. (iv) is the largest
B
in Fig. (iii) is the least
C
in Fig. (ii) is same as Fig. (iii) but is smaller than Fig. (iv)
D
is the same for all the figures
4
MCQ (Single Correct Answer)
Five charges $q_1, q_2, q_3, q_4$, and $q_5$ are fixed at their positions as shown in Figure, $S$ is a Gaussian surface. The Gauss' law is given by $\int_S E . d S=\frac{q}{\varepsilon_0}$. Which of the following statements is correct?
A
$\mathbf{E}$ on the LHS of the above equation will have a contribution from $q_1, q_5$ and $q_1, q_5$ and $q_3$ while $q$ on the RHS will have a contribution from $q_2$ and $q_4$ only
B
$\mathbf{E}$ on the LHS of the above equation will have a contribution from all charges while $q$ on the RHS will have a contribution from $q_2$ and $q_4$ only
C
$\mathbf{E}$ on the LHS of the above equation will have a contribution from all charges while $q$ on the RHS will have a contribution from $q_1, q_3$ and $q_5$ only
D
Both $\mathbf{E}$ on the LHS and $q$ on the RHS will have contributions from $q_2$ and $q_4$ only
5
MCQ (Single Correct Answer)
Figure shows electric field lines in which an electric dipole $P$ is placed as shown. Which of the following statements is correct?
A
The dipole will not experience any force
B
The dipole will experience a force towards right
C
The dipole will experience a force towards left
D
The dipole will experience a force upwards
6
MCQ (Single Correct Answer)
A point charge $+q$ is placed at a distance $d$ from an isolated conducting plane. The field at a point $P$ on the other side of the plane is
A
directed perpendicular to the plane and away from the plane
B
directed perpendicular to the plane but towards the plane
C
directed radially away from the point charge
D
directed radially towards the point charge