Online test 3 of class XII

Which of the following statements regarding equipotential surface is incorrect

• The potential is same on the equipotential surface.

• Work done on the corporation surface is zero.

• Electric field lines are always perpendicular to the equipotential surface.

• The spacing between equipotential surfaces enables us to identify regions of strong and weak fields.

• None of these

Equipotential surfaces for a positive point charge are

• concentric circles

• Concentric Spheres

• Equidistant plane surface

• Cylindrical surfaces.

Two equipotential surfaces never cross each other.

• True.

• False

• Statement is incomplete.

• None of these

Which of the following depicts the equipotential surface for dipole correctly

• 
• 
• 
• 

A ,B ,C represent the the equipotential surfaces. The potential surface is maximum at

• A

• B

• A=B=C

• C

A charged particle (q =1.4 mC) moves a distance of 0.4 m along an equipotential surface of 10 V, Calculate the work done by the field during this motion.

• Zero

• W= qV=1.4mCx10V=14 mJ

• 0.04J

• None of these.

Magnitude of electric field it is maximum at

• C

• B

• A

• Same at all points

In a uniform electric field, equispaced equipotential surfaces have equal change in potential

• True

• False

• May be true

• Cannot be determined

Electric field lines are

• Perpendicular to the equipotential surface

• Inclined with the eqipotential surface

• Alone the equipotential surface

• Incline if the core potential surface is curved.

1C Charge is moved from A equipotential surface to B equipotential surface as shown figure.Electric field is

• 50 V/m

• 0.5V/m

• 2V/m

• 100V/m