(C) For a metallic conductor in electrostatic equilibrium,the entire volume is an equipotential region,and the electric field inside the conductor is

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Electric field is normal to the surface of the cube

(C) For a metallic conductor in electrostatic equilibrium,the entire volume is an equipotential region,and the electric field inside the conductor is zero. Since the electric field lines must be perpendicular to the surface of a conductor at every point,the correct statement is that the electric field is normal to the surface of the cube. Therefore,option $C$ is correct.

Class 12 Physics Electric Charges and Fields Electric Field

Easy

$A$ cube of a metal is given a positive charge $Q$. For the above system,which of the following statements is true?

A
Electric potential at the surface of the cube is zero
B
Electric potential within the cube is zero
C
Electric field is normal to the surface of the cube
D
Electric field varies within the cube

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Electric Charges and Fields

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Electric Field

Four point positive charges of same magnitude $Q$ are placed at four corners of a rigid square frame in $xy$ plane as shown in the figure. The plane of the frame is perpendicular to the $z$-axis. If a negative point charge is placed at a distance $z$ away from the above frame $(z << L)$,then:

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The electric field intensity at a point in vacuum is equal to

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The electric field at the center of a semi-circle of radius $a$ and linear charge density $\lambda$ is given by:

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Two point charges $(+Q)$ and $(-2Q)$ are fixed on the $X$-axis at positions $a$ and $2a$ from the origin,respectively. At what position on the axis is the resultant electric field zero?

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Four point charges $-q, +q, +q$ and $-q$ are placed on the $y$-axis at $y = -2d, y = -d, y = +d$ and $y = +2d$,respectively. The magnitude of the electric field $E$ at a point on the $x$-axis at $x = D$,with $D >> d$,will vary as:

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$A$ cube of a metal is given a positive charge $Q$. For the above system,which of the following statements is true?

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Four point positive charges of same magnitude $Q$ are placed at four corners of a rigid square frame in $xy$ plane as shown in the figure. The plane of the frame is perpendicular to the $z$-axis. If a negative point charge is placed at a distance $z$ away from the above frame $(z << L)$,then:

The electric field intensity at a point in vacuum is equal to

The electric field at the center of a semi-circle of radius $a$ and linear charge density $\lambda$ is given by:

Two point charges $(+Q)$ and $(-2Q)$ are fixed on the $X$-axis at positions $a$ and $2a$ from the origin,respectively. At what position on the axis is the resultant electric field zero?

Four point charges $-q, +q, +q$ and $-q$ are placed on the $y$-axis at $y = -2d, y = -d, y = +d$ and $y = +2d$,respectively. The magnitude of the electric field $E$ at a point on the $x$-axis at $x = D$,with $D >> d$,will vary as:

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