Related InterviewSolutions

• Eight charges, 1muC, -7muC , -4muC, 10muC, 2muC, -5muC, -3muC, and 6muC`, are situated at the eight cornersof a cube of side 20 cm. A spherical surface of radius 80 cm encloses this cube. The center of the sphere coincides with the center of the cube. Then, the total outgoing flux from the spherical surface (in units of Vm) isA. `36 pi xx 10^3`B. `684 pi xx 10^3`C. zeroD. none of these
• A charge q is placed at the centre of the open end of a cylindrical vessel . The flux of the electric field through the surface of the vessel is A. ZeroB. `q/(epsilon_(0))`C. `q/(2epsilon_(0))`D. `(2q)/(epsilon_(0))`
• The electric field in a region is radially outward with magnitude `E=Ar`. Find the charge contained in a sphere of radius a centred at the origin. Take `A=100 V m^(-2)` and `a=20.0 cm`.
• Figure, shown above, shows three situations involving a charged particle and a uniformly charged spherical shell. The charges and radii of the shells are indicated in the figure. If `F_(1),F_(2)` and `F_(3)` are the magnitudes of the force on the particle due to the shell in situations (I),(II) and (III) then A. `F_(3) gtF_(2) gtF_(1)`B. `F_(1) gtF_(2)=F_(3) `C. `F_(3)= F_(2)gtF_(1) `D. `F_(1)gt F_(2)gtF_(3) `
• A linder charge having linear charge density `lambda` pentrates a cube diagonally and then it pentrates a spere diametrically as shown. What will br the ratio of flux coming out of cube and sphere ? A. `1/2`B. `2/ (sqrt3)`C. `(sqrt3)/2`D. `1/1`
• A cylinder of radius R and length L is placed in a uniform electric field E parallel to the axis. The total flux for the surface of the cylinder is given byA. `2piR^(2)E`B. `piR^(2)//E`C. `(piR^(2)- piR) E `D. zero
• In a certain region of space, there exists a uniform electric field of value ` 2xx 10^2hatkVm^(-1)`. A rectangular coil of dimension `10 cm xx 20 cm ` is placed in the xy plane. The electric flux through the coil isA. zeroB. 30 V mC. 40 V mD. 50 V m
• A spherical conductor `A` contains two spherical cavities as shown in Fig.2.127. The total charge on conductor itself is zero . However , there is a point charge `q_(1)` at the center of one cavity and `q_(2)` at the center of the other cavity . Another charge `q_(3)` is placed at a large distance `r` from the center of the spherical conductor. The force acting on conductor `A` will beA. zeroB. `(q_(3) (q_(1) + q_(2)))/(4 pi epsilon_(0) r^(2))`C. `( - q_(3) (q_(1) + q_(2)))/(4 pi epsilon_(0) r^(2))`D. `(q_(3) q_(1) + q_(2) q_(3) + q_(1) q_(2))/( 4 pi epsilon_(0) r^(2))`
• A spherical conductor `A` contains two spherical cavities as shown in Fig.2.127. The total charge on conductor itself is zero . However , there is a point charge `q_(1)` at the center of one cavity and `q_(2)` at the center of the other cavity . Another charge `q_(3)` is placed at a large distance `r` from the center of the spherical conductor. If `q_(1)` is displaced from its center slightly (being always inside the same cavity ), then the correct representation of field lines inside the same cavity isA. B. C. There will be no field lines inside the cavity.D.
• A spherical conductor `A` contains two spherical cavities as shown in Fig.2.127. The total charge on conductor itself is zero . However , there is a point charge `q_(1)` at the center of one cavity and `q_(2)` at the center of the other cavity . Another charge `q_(3)` is placed at a large distance `r` from the center of the spherical conductor. Which of the following statements are true ?A. Charge `q_(3)` applies a larger force on the charge `q_(2)` than on charge `q_(1)`.B. Charge `q_(3)` applies a smaller force on the charge `q_(2)` than on charge `q_(1)`.C. Charge `q_(3)` applies equal force on both the charges.D. Charge `q_(3)` applies no force on any of the charges.