Charge of `12muC` is given toa hollow metallic sphere of radius 0.1 m. find the potential at (i) the surface of the sphere (ii) the centre of the sphere.
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A point charge `q_(0)` is placed at the centre of uniformly charges ring of total charge Q and radius R. If the point charge is slightly displaced wit
Only electric force is acting on `q_(0)` `:. W_(el)=DeltaK" "=1/2 mv^(2)-0" "implies" "`Now `W_(el)")"_(c rarr oo) =q_(0) V_(c) =q_(0) (KQ)/R`. `:. (Kq_(0)Q)/R=1/2 mv^(2)" "implies" "v=sqrt((2Kq_(0)Q)/(mR))`
2 Answers 1 views
A conducting sphere of radius R carries a charge Q. It is enclosed by another concentric spherical shell of radius 2R. Charge from the inner sphere is
Correct Answer - `-(Q^(2))/(16pi in_(0)R)`
2 Answers 1 views
A point charge q has been placed at a distance x from the centre of a neutral solid conducting sphere of radius R(x gt R). Find the potential of the s
Correct Answer - `(1)/(4pi in_(0))(q)/(x)` for both cases
2 Answers 3 views
A solid sphere of radius R has total charge Q. The charge is distributed in spherically symmetric manner in the sphere. The charge density is zero at
Correct Answer - (a). `rho(r)=(Q)/(piR^(4))r` (b) `(Qr_(1)^(2))/(4pi in_(0)R^(4))`
2 Answers 1 views
A metallic sphere of radius R has a small bulge of hemispherical shape on its surface. The radius of the bulge is r. If a charge Q is given to the sph
Correct Answer - `(Qr)/(2R)`
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Calculate the self potential energy of charge q distributed over the surface of a hollow sphere of radius R. What happens to this self energy when R=0
Correct Answer - `(q^(2))/(8piepsilon_(0)R)`
2 Answers 2 views
A hollow metal sphere is charged with `0.4muC` of charge and has a radius of 0.1 find the potential (i) at the surface (ii) inside the sphere (iii) at
Correct Answer - 36 kV, 3kV, 6kV
2 Answers 9 views
A uniformly charged sphere has a total charge of `300muC` and radius of 8 cm. find the electric field (i) at a point 16 cm from the centre of the sphe
Correct Answer - `1.05xx10^(8)NC^(-1),1.17xx10^(8)NC^(-1)`, zero
2 Answers 2 views
Consider three identical metal spheres ` A, B` and `C`. Sphere `A` carries charge ` + 6q`, sphere `B` carries charge `-3q` and sphere `C` carries no c
Correct Answer - `2.25q`
2 Answers 4 views
A solid glass sphere with radius R and an index of refraction `1.5` is silvered over one hemisphere. A small object is located on the axis of the sphe
Correct Answer - On the pole of mirror
2 Answers 1 views