Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 114

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The number of electric lines that emerge from a finite charge $+ q$ is _____

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Important Questions on Electrostatics

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 115

A hollow insulated conducting sphere is given a positive charge of

10 μC

. What will be the electric field at the centre of the sphere? The radius of the sphere is

2 m

.

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 116

A charge

+ q

is at a distance

\frac{L}{2}

above a square of side

L

. Then what is the flux linked with the surface?

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 117

The expression for electric field intensity at a point outside uniformly charged thin plane sheet is (

d

is the distance of point from plane sheet)

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 118

Two hollow concentric spheres

A

and

B

are enclosing electric charges

2 C

and

8 C

respectively. If the radius of

A

is less than that of

B,

the ratio of electric flux through

A

to the electric flux through

B

is

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 119

Consider a region in free space bounded by the surfaces of an imaginary cube having sides of length $a$ as shown in the figure. A charge $+ Q$ is placed at the centre $O$ of the cube. $P$ is such a point outside the cube that the line $O P$ perpendicularly intersects the surface $A B C D$ at $R$ and also $O R = R P = a / 2$ . A charge $+ Q$ is placed at point $P$ also. What is the total electric flux through the five faces of the cube other than $A B C D ?$

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 120

During charging a capacitor, variations of potential

V

of the capacitor with time

t

is shown as,

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 121

If the plates of a parallel plate capacitor are not equal in area, then quantity of charge

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Physics Crash Course NEET>Chapter 12 - Electrostatics>Level 1>Q 122

Two isolated charged metallic spheres of radii $R_{1}$ and $R_{2}$ having charges $Q_{1}$ and $Q_{2}$ , respectively, are connected to each other, then there is: