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A circle of radius $R$ is drawn in a uniform electric field $E$ as shown in the fig. $V_{A}, V_{B}, V_{c}$ are respectively the potentials of points $A, B, C$ and $D$ on the circle then:

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Important Questions on Electrostatics

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 73

A uniform electric field pointing in positive

x -

direction exists in a region. Let, $A$ be the origin, $B$ be the point on the

x -

axis at

x = + 1 cm

and $C$ be the point on the

y -

axis at

y = + 1 cm

. Then the potentials at the points

A, B

and $C$ , satisfy:

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 74

The electric potential

V

is given as a function of distance

x

(metre) by

V = (5 x^{2} + 10 x - 9)

volt. The value of electric field at

x = 1

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 75

The electric potential and electric field at a point due to a point charge are

600 V

and

200 N / C

respectively. Then magnitude of the point charge should be:

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 76

Two concentric spheres of radii

R

and

r

have similar charges with equal surface densities

(σ)

. What is the electric potential at their common centre?

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 77

Three charges

2 q

- q

and

- q

are located at the vertices of an equilateral triangle. At the centre of the triangle.

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 78

The electric field $\vec{E}$ is constant in both magnitude and direction. Consider a path of length d at an angle $θ = 60 °$ with respect to field lines as shown in figure. The potential difference between points $1$ and $2$ is:-

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 79

The electric potential in a certain region is expressed by

V = 6 x - 8 x y^{2} - 8 y + 6 y z - 4 z^{2}

volts. The magnitude of the force acting on a charge of

2 C

situated at the origin will be :–

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Beta Question Bank for Medical: Physics>Chapter 22 - Electrostatics>Exercise (Conceptual Questions)>Q 80

Which statement is true?

(i) A ring of radius $R$ carries a uniformly distributed charge $+ Q$ . A point charge $- q$ is placed on the axis of the ring at a distance $2 R$ from its centre and released. The particle executes simple harmonic motion along the axis of the ring.

(ii) Electrons move from a region of higher potential to that of lower potential

A circle of radius R is drawn in a uniform electric field E as shown in the fig. VA,VB,Vc are respectively the potentials of points A,B,C and D on the circle then:

Important Questions on Electrostatics

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A circle of radius $R$ is drawn in a uniform electric field $E$ as shown in the fig. $V_{A}, V_{B}, V_{c}$ are respectively the potentials of points $A, B, C$ and $D$ on the circle then: