Electric Field Due to a Dipole
Trending Questions
Q. Find the net electric field at an axial point P of a dipole as shown in figure.
- 16.3 N/C
- 14.3 N/C
- 15.3 N/C
- 12.3 N/C
Q. For the given graph between electric field (E) at a point and distance (x) of this point from the mid-line of an infinitely long uniformly charged non-conducting thick sheet, the volume charge density of the given sheet is:-
[d is the thickness of the sheet]
[d is the thickness of the sheet]
- 15×10−12 C/m3
- 9×10−12 C/m3
- 12×10−12 C/m3
- 3×10−12 C/m3
Q. Two short electric dipoles of moment P and 27P are placed as shown below. If at the point O the electric field is zero between the dipoles, then the distance of the point O from the centre of first dipole is
- 6 cm
- 8 cm
- 4 cm
- 2 cm
Q. Find the maximum value of torque acting on the dipole placed in a uniform electric field as shown in figure.
- 10−6 N-m
- 2×10−6 N-m
- 3×10−6 N-m
- Data insufficient
Q. An electric dipole is placed at a distance x from center O on the axis of a charged ring of radius R and charge Q uniformly distributed over it. What is the work done in rotating the dipole through 180∘?
- aqQxπε0(R2+x2)32
- zero
- aqQx(R2+x2)
- aqQx2πε0(R2+x2)32
Q. A hollow sphere contains a dipole with dipole moment 10 Cm and each charge having a magnitude of 100 C. Flux throught the sphere is
- 100/ϵ0
- 200/ϵ0
- Zero
- Data Insufficient
Q. Consider two concentric spherical surfaces S1 with radius a and S2 with radius 2a, both centred on the origin. There is a charge +q at the origin, and no other charges. Compare the flux ϕ1 through S1 with flux ϕ2 through S2
- ϕ1=2ϕ2
- ϕ1=4ϕ2
- ϕ1=ϕ22
- ϕ1=ϕ2
