Figure shows three circular arcs each of radius r

Asked by admin @ 16/08/2021 in Physics viewed by 282 People

Figure shows three circular arcs, each of radius R and total charge as indicated. The net electric potential at the centre of curvature is

(a) Q4π∈0R (b) Q2π∈0R (c) 2Qπ∈0R (d) Qπ∈0R

Answered by admin @ 16/08/2021

The answer will be (b)
V=V1+V2+V3

A circular loop of radius r carrying current i

Asked by admin @ 16/08/2021 in Physics viewed by 343 persons

A circular loop of radius r carrying a current i is held at the centre of another circular loop of radius R(>>r) carrying a current I. The plane of the …

A circular hoop of mass m and radius r

Asked by admin @ 23/08/2021 in Physics viewed by 347 persons

A circular hoop of mass m and radius R rests flat on a horizontal frictionless surface. A bullet also of mass m, and moving with a velocity v, strikes the …

Which graph shows data whose r-value is most likely closest to 0?

Asked by maham237 @ 22/12/2020 in Mathematics viewed by 449 persons

Which graph shows data whose r-value is most likely closest to 0

Which graph shows data whose r-value is most likely closest to 1?

Asked by maham237 @ 22/12/2020 in Mathematics viewed by 340 persons

Which graph shows data whose r-value is most likely closest to 1?

Which three-dimensional figure has double the number of edges as faces?

Asked by maham237 @ 25/12/2020 in Mathematics viewed by 461 persons

Which three-dimensional figure has double the number of edges as faces? rectangular prism rectangular pyramid triangular prism triangular pyramid

Every possible cross section of a three-dimensional figure is a circle. what is the figure?

Asked by wiki @ 14/11/2020 in Mathematics viewed by 362 persons

cone cylinder circle sphere

A wire of length l and radius r

Asked by admin @ 31/08/2021 in Physics viewed by 309 persons

A wire of length l radius r is stretched by a force f and a second wire of same material with kength 2l and radius 2r is stretched with a …

A conducting ring of radius r is placed perpendicularly

Asked by admin @ 23/08/2021 in Physics viewed by 305 persons

a conducting ring of radius r is placed perpendicularly inside a time varying magnetic field given by B=Bi+ alpha•t. Bi and alpha are positive constant.Emf induced in the ring is

A wheel of radius r is placed on ground

Asked by admin @ 20/08/2021 in Physics viewed by 400 persons

A wheel of radius R is placed on ground and its contact point is P. if wheel starts rolling without slipping and completes half a revolution, find the displacement if …

Twenty seven solid iron spheres each of radius r

Asked by admin @ 20/08/2021 in Math viewed by 298 persons

"Question 9 Twenty seven solid iron spheres, each of radius r and surface area S are melted to form a sphere with surface area S'. Find the (i) radius r' …

A spherical ball of mass m and radius r

Asked by admin @ 20/08/2021 in Physics viewed by 310 persons

A spherical ball of mass m and radius r rolls without slipping on a rough concave surface of large radius R. It makes small oscillation about the lowest point. Find …

A round balloon of radius r subtends an angle

Asked by admin @ 20/08/2021 in Math viewed by 283 persons

A round balloon of radius 'r' subtends an angle 'alpha' at the eye of the observer while the angle of elevation of its centre is beta. Prove the height of …

A particle describes a horizontal circle of radius r

Asked by admin @ 20/08/2021 in Physics viewed by 330 persons

Solve it A particle describes a horizontal circle of radius r on a smooth surface of an inverted cone as shown the height of the plane of circle above vertex …

A concrete sphere of radius r has a cavity

Asked by admin @ 17/08/2021 in Physics viewed by 297 persons

A concrete sphere of radius R has a cavity of radius r which is packed with sawdust. The specific gravities of concrete and sawdust are respectively 2.4 and 0.3 for …

A metal ball of radius r is placed concentrically

Asked by admin @ 17/08/2021 in Physics viewed by 370 persons

A metal ball of radius `r` is placed concentrically inside hollow metal sphere of inner radius `2r` and outer radius `3r`.The ball is given a charge `+2q` and the hollow …