Home
Class 12
PHYSICS
Two conentric conducting thin spherical ...

Two conentric conducting thin spherical shells A and B having radii `r_(A)` and `r_(B) (r_(B) gt r_(A))` are charged to `Q_(A)` and `-Q_(B) (|Q_(B)| gt Q_(A)|)`. The electrical field along a line, (passing through the centre) is

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
C
`|Q_(n)|gt|Q_(A)|` (given). Inside the shell B, the potential is a constant and negative.
But `V_(A)" inside "r_(A)` is positive and greater than that of B because `r_(A)ltr_(B)`. Upto `r_(n)` this is `gtV_(n)` one gets the course `prop 1//r.` At B, the negative potential is more therefore the potential line still negative. (c) explains all these factors.
Note: However the question asked is the field and the diagrams given are for the potential. This an error.
Promotional Banner

Similar Questions

Explore conceptually related problems

Two concentric conducting thin spherical shells A andB having radii rA and r8 (r_(8) gt r_(A)) are charged to Q_(A) and - Q_(B)(|Q_(B)| gt |Q_(A)|) . The electric field strength along a line passing through the centre varies with the distance x as :

Two concentric coducting thin spherical shells A and B having radii r_A and r_B(r_Bgtr_A) are charged to Q_A and -Q_B(|Q_B|gt|Q_A|) . The electrical field along a line passing through the centre is

Two concentric uniformly charge spherical shells of radius R_(1) and R_(2) (R_(2) gt R_(1)) have total charges Q_(1) and Q_(2) respectively. Derive an expression of electric field as a function of r for following positions. (i) r lt R_(1) (ii) R_(1) le r lt R_(2) (iii) r ge R_(2)

Two concentric conducting shells of radii R and 2R are having charges Q and -2Q respectively.In a region r

Two concentric spherical shells of radius R_(1) and R_(2) (R_(2) gt R_(1)) are having uniformly distributed charges Q_(1) and Q_(2) respectively. Find out total energy of the system.

Two concentric, thin metallic spheres of radii R_(1) and R_(2) (R_(1) gt R_(2)) charges Q_(1) and Q_(2) respectively Then the potential at radius r between R_(1) and R_(2) will be (k = 1//4pi in)

In an arrangement of two concentric conducting shells, with centre at origin and radii a and b (a lt b) , charges Q_(1) and Q_(2) are given to inner and outer shell, then the potential V at a distance r from the origin is (r lt a )

Consider two concentric spherical metal shells of radii r_(1) and r_(2) (r_(2) gt r_(1)) . If the outer shell has a charge q and the inner one is grounded, then the charge on the inner shell is

There are two concentric conducting spherical shells of radius r_A and r_B respectively (r_B= 2r_A) . If the inner shell is given a charge Q and outer shell is given a charge 2Q, then the potential difference between the surfaces of the shells will be K=1/(4piepsilon_0)

Three concentric conducting spherical shells of radii R, R2 and 3R carry charges Q,-2Q and 3Q, respectively compute the electric field at r = (5)/(2) R