Electric potential

Two charged spheres of radii 10 cm and 15 cm are connected by a thin wire. No current will flow, if they have

• The same charge on each

• The same energy

• The same potential

• The same field on their surfaces

Inside a hollow charged spherical conductor, the potential

• Varies directly as the distance from the centre

• Varies inversely as the distance from the centre

• Varies inversely as the square of the distance from the centre

• Is constant

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

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

Three charges 2q, -q, -q are located at the vertices of an equilateral triangle. At the centre of the triangle

• The field is zero but potential is non-zero

• Both field and potential are zero

• Both field and potential are non-zero

• The field is non-zero but potential is zero

Tags

NGSS.HS-PS2-4

Two plates are 2cm apart, a potential difference of 10 V is applied between them, the electric field between the plates is

• 20 N/C

• 500 N/C

• 5 N/C

• 250 N/C

Angle between equipotential surface and lines of force is

• 0

• 180

• 90

• 45

Two charge +Q and -Q are situated at a certain distance. At the point exactly midway between them

• Electric field and potential both are zero

• Electric field is zero but potential is not zero

• Electric field is not zero but potential is zero

• Neither electric field nor potential is zero

Tags

NGSS.HS-PS2-4

A metallic solid sphere is placed in a uniform electric field. The lines of force follow the path(s) shown in figure as

• 1

• 2

• 3

• 4

A charge of 5 C experiences a force of 5000 N when it is kept in a uniform electric field. What is the potential difference between two points separated by a distance of 1cm

• 10 V

• 250 V

• 1000 V

• 2500 V