Test: Equipotential Surfaces - NEET MCQ

# Test: Equipotential Surfaces - NEET MCQ

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## 10 Questions MCQ Test Physics Class 12 - Test: Equipotential Surfaces

Test: Equipotential Surfaces for NEET 2024 is part of Physics Class 12 preparation. The Test: Equipotential Surfaces questions and answers have been prepared according to the NEET exam syllabus.The Test: Equipotential Surfaces MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Equipotential Surfaces below.
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Test: Equipotential Surfaces - Question 1

### For any charge configuration, equipotential surface through a point is _____to the electric field at that point.

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Definition based

Test: Equipotential Surfaces - Question 2

### Two equipotential surfaces have a potential of -10V and 90V respectively, what is the difference in potential between these surfaces?

Detailed Solution for Test: Equipotential Surfaces - Question 2

Potential = high potential - low potential
so our high potential is 90V and low potential is 10V,
potential = 90-(-10)=100V

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Test: Equipotential Surfaces - Question 3

### Optical analogue of an equipotential surface is

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Definition based

Test: Equipotential Surfaces - Question 4

Electric field is steepest in the direction in which the potential

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In the direction of electric field the electric potential decreases. This is because electric potential is the work done against the direction of the electric field.

Test: Equipotential Surfaces - Question 5

Equipotential surfaces cannot

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The electric field lines are perpendicular to the equipotential surface. The field lines can not intersect each other because the electric force can not have two directions at a point.

Test: Equipotential Surfaces - Question 6

The shape of equipotential surface for an infinite line charge is:​

Detailed Solution for Test: Equipotential Surfaces - Question 6

The shape of equipotential surface for an infinite line charge is coaxial cylindrical because A curved surface on which potential is constant is equipotential curve . If we consider the line charge then the focus of the point should have the same potential hence it is a coaxial cylinder.

Test: Equipotential Surfaces - Question 7

When a positive charge is moved in an electrostatic field from a point at high potential to a low potential, its kinetic energy

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We can generalise it by assuming a positive charge moving away from another positive charge. now both of them are repelling each other with some force. so that positive charge will accelerate which results in the increase in K.E.

Test: Equipotential Surfaces - Question 8

Shape of equipotential surfaces for a uniform electric field along x-axis are

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Shape of equipotential surfaces for a uniform electric field along x-axis are Planes normal to the field.

Test: Equipotential Surfaces - Question 9

The value of electric field vector along the surface of constant potential of 100 V

Detailed Solution for Test: Equipotential Surfaces - Question 9

As we know that electric field is in the reverse sense of the directional gradient of electric potential, so if V is constant, E should be zero. So, for E to be zero, either V has to be zero, or constant, or the 3 directional derivative components of V must cancel out each other in space. So we can not claim that V always has to be zero, if E is zero in a region, since E is a vector & V is a scalar quantity. But if V is zero, then surely E has to be zero; the reverse case is not always true.

Test: Equipotential Surfaces - Question 10

The amount of work done in moving a unit positive charge through distance of 10 cm on an equipotential surface is

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Definition based

## Physics Class 12

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## Physics Class 12

105 videos|425 docs|114 tests