WorksheetsPhysics Quiz
Total questions: 10
Worksheet time: 5mins
A positively charged particle is released from rest in an uniform electric field. The electric potential energy of the charge?
Remains a constant because the electric field is uniform.
Increases because the charge moves along the electric field.
Decreases because the charge moves opposite to the electric field.
Decreases because the charge moves along the electric field.
Equipotentials at a great distance from a collection of charges whose total sum is not zero are approximately?
spheres
planes
paraboloids
ellipsoids
Two small spheres each carrying a charge q are placed r metre apart. If one of the spheres is taken around the other one in a circular path of radius r, the work done will be equal to?
force between them × r
force between them × 2πr
force between them/2πr
zero
The electric potential V at any point O (x, y, z all in metres) in space is given by V = 4x² volt. The electric field at the point (1 m, 0, 2 m) in volt/metre is?
8 along negative x-axis
8 along positive x-axis
16 along negative x-axis
16 along positive z-axis
If a unit positive charge is taken from one point to another over an equipotential surface then?
Work is done on the charge.
Work is done by the charge.
Work done is constant.
No work is done.
A hollow metal sphere of radius 5 cm is charged so that the potential on its surface is 10 V. The potential at the centre of the sphere is?
0 V
10 V
Same as at point 5 cm away from the surface
Same as at point 25 cm away from the surface
The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A, is?
Proportional to the square root of the distance between the plates.
Linearly proportional to the distance between the plates.
Independent of the distance between the plates.
Inversely proportional to the distance between the plates.
A capacitor is charged by a battery. The battery is removed and another identical uncharged capacitor is connected in parallel. The total electrostatic energy of resulting system?
Increases by a factor of 4.
Decreases by a factor of 2.
Remains the same.
Increases by a factor of 2.
A conductor with a positive charge?
Is always at +ve potential.
Is always at zero potential.
Is always at negative potential.
May be at +ve, zero or -ve potential.
64 drops each having the capacity C and potential V are combined to form a big drop. If the charge on the small drop is q, then the charge on the big drop will be?
2q
4q
16q
64q
