Q 1;
Figure 1.0a shows anelectric dipole in a uniformelectric field with magnitude 5.0Ã 105
N/C directed parallelto the plane of the figure.The charges are ± 1.6 Ã10-19C;both lie in
the plane and areseparated by 0.125nm.
Find
a) The net forceexerted by the field on thedipole;
b) The magnitude anddirection of the electricdipole moment;
c) The magnitude anddirection of the Torque;
d) The potentialenergy of the system in positionshown.
(a) (b)
Figure 1.0 (a) anelectric dipole (b) Direction ofthe electric dipole moment,electric field,
and torque
Q 2;
A hollow conductingsphere has no net charge. Thereis a positive point charge q atthe
centre of thespherical cavity within the sphere.You connect a conducting wirefrom the
outside of the sphereto ground. Will you measure anelectric field outside thesphere?
Q 3;
Suppose the electricfield lines in a region ofspace are straight lines. If a chargedparticle
is released from restin the region, will thetrajectory of the particle be along a fieldline?
Q 1;
Figure 1.0a shows anelectric dipole in a uniformelectric field with magnitude 5.0Ã 105
N/C directed parallelto the plane of the figure.The charges are ± 1.6 Ã10-19C;both lie in
the plane and areseparated by 0.125nm.
Find
a) The net forceexerted by the field on thedipole;
b) The magnitude anddirection of the electricdipole moment;
c) The magnitude anddirection of the Torque;
d) The potentialenergy of the system in positionshown.
(a) (b)
Figure 1.0 (a) anelectric dipole (b) Direction ofthe electric dipole moment,electric field,
and torque
Q 2;
A hollow conductingsphere has no net charge. Thereis a positive point charge q atthe
centre of thespherical cavity within the sphere.You connect a conducting wirefrom the
outside of the sphereto ground. Will you measure anelectric field outside thesphere?
Q 3;
Suppose the electricfield lines in a region ofspace are straight lines. If a chargedparticle
is released from restin the region, will thetrajectory of the particle be along a fieldline?
