Physics-
General
Easy

Question

Three positive and three negative charges of equal magnitude are placed at the corners of a regular hexagon PQRSTU. If electric field at O due to all the charges is twice the field at O due to a positive charge at R only, the order in which the changes are placed at PQRSTU is

  1. + – + – + –    
  2. – + + + – –    
  3. + + + – – –    
  4. – + + – + –    

The correct answer is: – + + – + –

Related Questions to study

General
physics-

Four plates of area A are arranged as shown. The equivalent capacitance between A and B is

Four plates of area A are arranged as shown. The equivalent capacitance between A and B is

physics-General
General
physics-

Three point charges q, q, –2q are placed on an equilateral triangle of side a. The magnitude of dipole moment of the arrangement is

Three point charges q, q, –2q are placed on an equilateral triangle of side a. The magnitude of dipole moment of the arrangement is

physics-General
General
physics-

The equivalent capacitance of the combination shown in

The equivalent capacitance of the combination shown in

physics-General
parallel
General
physics-

Four wires each of length 2m are bent into four loops P,Q,R, and S and then suspended into a uniform magnetic field same current is passed in each loop The correct statement is

Four wires each of length 2m are bent into four loops P,Q,R, and S and then suspended into a uniform magnetic field same current is passed in each loop The correct statement is

physics-General
General
physics-

A charged particle q is shot towards another charged particle Q, which is fixed, with a speed v. It approaches Q upto a closet r and then returns. If q were given a speed of 2v, the closest distances of approach would be

A charged particle q is shot towards another charged particle Q, which is fixed, with a speed v. It approaches Q upto a closet r and then returns. If q were given a speed of 2v, the closest distances of approach would be

physics-General
General
physics-

Three charges –q1, +q2 and –q3 are placed as shown in the figure. The x-component of the force on –q1 is proportional to

Three charges –q1, +q2 and –q3 are placed as shown in the figure. The x-component of the force on –q1 is proportional to

physics-General
parallel
General
physics-

Two similar conducting balls of mass m are hung from silk threads of length L and carry similar charges q as shown in the figure. Assuming theta to be small, the distance x between the balls is

Two similar conducting balls of mass m are hung from silk threads of length L and carry similar charges q as shown in the figure. Assuming theta to be small, the distance x between the balls is

physics-General
General
physics-

A rectangular loop carrying current I is located near an infinite long straight conductor carrying current I as shown in the figure. The loop,

A rectangular loop carrying current I is located near an infinite long straight conductor carrying current I as shown in the figure. The loop,

physics-General
General
chemistry-

 The product is

 The product is

chemistry-General
parallel
General
physics-

A thin metal plate P is inserted between the plates of a parallel-plate capacitor of capacitance C in such a ways that its edges touch the two plates (see the figure). The capacitance now becomes

A thin metal plate P is inserted between the plates of a parallel-plate capacitor of capacitance C in such a ways that its edges touch the two plates (see the figure). The capacitance now becomes

physics-General
General
physics-

A and B are two concentric spheres. If A is given a charge Q while B is earthed as shown in figure.

A and B are two concentric spheres. If A is given a charge Q while B is earthed as shown in figure.

physics-General
General
physics-

A particle of mass m and charge q is placed at rest in a uniform electric field E as shown and released. The kinetic energy it attains after moving a distance y is

A particle of mass m and charge q is placed at rest in a uniform electric field E as shown and released. The kinetic energy it attains after moving a distance y is

physics-General
parallel
General
physics-

Four metallic plates, each having area A, are placed as shown. The distance between the consecutive plates is d. Alternate plates are connected to points A and B. The equivalent capacitance of the system between A and B is

Four metallic plates, each having area A, are placed as shown. The distance between the consecutive plates is d. Alternate plates are connected to points A and B. The equivalent capacitance of the system between A and B is

physics-General
General
physics-

The three capacitors in figure, store a total energy of

The three capacitors in figure, store a total energy of

physics-General
General
physics-

In the figure, the potential at X due to the charges + Q and – Q is, using SI units,

In the figure, the potential at X due to the charges + Q and – Q is, using SI units,

physics-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.