Chapterwise/Topicwise Daily Practice Problems (DPP) Electrostatics and Current Electricity JEE Main & Advanced>Chapter 1 - Coulomb's Laws and Electric Field>DPP>Q 10

MEDIUM

JEE Main

IMPORTANT

Earn 100

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

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Important Questions on Coulomb's Laws and Electric Field

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JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Electrostatics and Current Electricity JEE Main & Advanced>Chapter 1 - Coulomb's Laws and Electric Field>DPP>Q 11

An electric dipole is kept on the axis of a uniformly charged ring at distance

\frac{R}{\sqrt{2}}

from the centre of the ring. The direction of the dipole moment is along the axis. The dipole moment is

P

, the charge of the ring is

Q

and radius of the ring is

R

. The force on the dipole is

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JEE Main

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Chapterwise/Topicwise Daily Practice Problems (DPP) Electrostatics and Current Electricity JEE Main & Advanced>Chapter 1 - Coulomb's Laws and Electric Field>DPP>Q 12

Two short dipoles

p \hat{k}

and

\frac{p}{2} \hat{k}

are located at

(0, 0, 0)

and

(1 m, 0, 2 m)

, respectively. The resultant electric field due to the two dipoles at the point

(1 m, 0, 0)

is

EASY

JEE Main

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Chapterwise/Topicwise Daily Practice Problems (DPP) Electrostatics and Current Electricity JEE Main & Advanced>Chapter 1 - Coulomb's Laws and Electric Field>DPP>Q 13

The total electric force on an electric dipole placed in the electric field of a point charge is,

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JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Electrostatics and Current Electricity JEE Main & Advanced>Chapter 1 - Coulomb's Laws and Electric Field>DPP>Q 14

The locus of the points (in the

x y

-plane) where the electric field due to a dipole (dipole axis is along

x

-axis and its equatorial is along

y

-axis) is perpendicular to its axis is