HARD

JEE Advanced

IMPORTANT

Earn 100

The maximum electric field at a point on the axis of a uniformly charged ring is $E_{0}$ . At how many points on the axis will the magnitude of the electric field be $\frac{E_{0}}{2}$ .

100% studentsanswered this correctly

Important Questions on Coulomb's Law and Electric Field

MEDIUM

JEE Advanced

IMPORTANT

PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 1 - Coulomb's Law and Electric Field>Exercise>Q 14

Three charges

+ Q_{1}

+ Q_{2}

and

q

are placed on a straight line such that

q

is somewhere in between

+ Q_{1}

and

+ Q_{2}

. If this system of charges is in equilibrium, what should be the magnitude and sign of charge

q

MEDIUM

JEE Advanced

IMPORTANT

PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 1 - Coulomb's Law and Electric Field>Exercise>Q 15

A point charge of

100 μC

is placed at

(3 \hat{i} + 4 \hat{j}) m

. Find the electric field intensity due to this charge at a point located at

(9 \hat{i} + 12 \hat{j}) m

HARD

JEE Advanced

IMPORTANT

PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 1 - Coulomb's Law and Electric Field>Exercise>Q 16

An oil drop, carrying six electronic charges and having a mass of

1.6 \times 10^{- 12} g

, falls with some terminal velocity in a medium. What magnitude of the vertical electric field is required to make the drop move upward with the same speed as it was formerly moving downward? Ignore buoyancy.

MEDIUM

JEE Advanced

IMPORTANT

PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 1 - Coulomb's Law and Electric Field>Exercise>Q 17

Five points charges,

+ q

each is placed at the five vertices of a regular hexagon. The distance of the centre of the hexagon from any of the vertices is

a

. The electric field at the centre of the hexagon is

MEDIUM

JEE Advanced

IMPORTANT

PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 1 - Coulomb's Law and Electric Field>Exercise>Q 18

A ring of charge with radius $0.5 m$ has $0.002 π m$ gap. If the ring carries a charge of $+ 1 C$ , the electric field at the centre is
Question Image

HARD

JEE Advanced

IMPORTANT

PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 1 - Coulomb's Law and Electric Field>Exercise>Q 19

Three positive charges of equal magnitude

q

are placed at the vertices of an equilateral triangle of side

l

. How can the system of charges be placed in equilibrium?

MEDIUM

JEE Advanced

IMPORTANT

PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 1 - Coulomb's Law and Electric Field>Exercise>Q 20

Three identical spheres, each having a charge

q

and radius

R

, are kept in such a way that each touches the other two. The magnitude of the electric force on any sphere due to the other two is

MEDIUM

JEE Advanced

IMPORTANT

PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 1 - Coulomb's Law and Electric Field>Exercise>Q 21

Five point charges, each of value

+ q

, are placed on five vertices of a regular hexagon of side

L

. The magnitude of the force on a point charge of value

- q

coulomb placed at the center of the hexagon is

The maximum electric field at a point on the axis of a uniformly charged ring is E0. At how many points on the axis will the magnitude of the electric field be E02.

Important Questions on Coulomb's Law and Electric Field

Learn and Prepare for any exam you want !

The maximum electric field at a point on the axis of a uniformly charged ring is $E_{0}$ . At how many points on the axis will the magnitude of the electric field be $\frac{E_{0}}{2}$ .