Electromagnetism - SS2 Physics Past Questions and Answers - page 1
The electric field at a point in space is defined as:
The force experienced by a positive charge placed at that point..
The potential energy of a positive charge placed at that point.
The work done by a positive charge to reach that point.
The electric potential at that point
The SI unit of electric field is:
Volt (V)
Ampere (A)
Newton (N)
Coulomb (C)
The electric field lines around a positive point charge:
Are directed inward towards the charge.
Are directed outward away from the charge.
Are perpendicular to the charge.
Are parallel to the charge.
Electric potential is defined as:
The amount of charge stored in a capacitor.
The work done by an external agent to bring a unit positive charge from infinity to a point.
The force experienced by a positive charge in an electric field.
The ratio of the electric field to the electric potential energy.
The electric potential at a point in space depends on:
The distance from the point to a reference point.
The magnitude of the electric field at the point.
The charge of a test charge placed at the point.
All of the above.
In an electric field, the electric potential is constant along:
Equipotential lines.
Electric field lines.
Conductor surfaces.
None of the above.
The relationship between electric field and electric potential is given by:
E = kq/r2
E = V/d
V = kq/r
V = Ed
The electric potential energy of a charge in an electric field is given by:
PE = mgh
PE = 1/2 kx2
PE = qV
PE = Fd
The work done by the electric field on a charge moving along an equipotential surface is:
Zero
Positive
Negative
Cannot be determined
The electric potential inside a charged conducting sphere is:
Constant throughout the sphere.
Zero throughout the sphere.
Maximum at the centre and decreases towards the surface.
Maximum at the surface and decreases towards the centre.