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Two identical conductors of copper and aluminium are placed in an identical electric field. The magnitude of induced charge in the aluminum will be
Since both are metals so equal amount of charge will induce on them.
Two spherical conductors B and C having equal radii and carrying equal charges in them repel each other with a force F when kept apart at some distance. A third spherical conductor having same radius as that of B but uncharged is brought in contact with B, then brought in contact with C and finally removed away from both. The new force of repulsion between B and C is
Two equally charged, identical metal spheres A and B repel each other with a force 'F'. The spheres are kept fixed with a distance 'r' between them. A third identical, but uncharged sphere C is brought in contact with A and then placed at the mid-point of the line joining A and B. The magnitude of the net electric force on C is
An infinite number of charges, each of charge 1 μC, are placed on the x-axis with co-ordinates x = 1, 2, 4, 8, ....∞. If a charge of 1 C is kept at the origin, then what is the net force acting on 1 C charge
A charge q is placed at the centre of the line joining two equal charges Q. The system of the three charges will be in equilibrium, if q is equal to
For the three charges to be in equilibrium, the net force on each charge must be zero. The force between two equal charges Q varies inversely with the square of the distance. By applying the condition of equilibrium, we find that the charge q at the center must be -Q/4.
The magnitude of electric field intensity E is such that, an electron placed in it would experience an electrical force equal to its weight is given by
According to the question, eE = mg
⇒
A charge particle is free to move in an electric field. It will travel
Because E points along the tangent to the lines of force. If initial velocity is zero, then due to the force, it always moves in the direction of E. Hence will always move on some lines of force.
The electric field near a conducting surface having a uniform surface charge density σ is given by
Electric field near the conductor surface is given by and it is perpendicular to surface.
The magnitude of electric field E in the annular region of a charged cylindrical capacitor
The magnitude of electric field in the annular region of a charged cylindrical capacitor is given by where λ is the charge per unit length and r is the distance from the axis of the cylinder. Thus
A hollow insulated conducting sphere is given a positive charge of 10μC. What will be the electric field at the centre of the sphere if its radius is 2 meters
The intensity of electric field inside a hollow conducting sphere is zero.
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.