For which of the following, the superposition principle does not hold?

Energy Density of Electric field

MEDIUM

JEE Main

IMPORTANT

Earn 100

Find the charge (in $μ C$ ) on the capacitor $C$ in the figure shown. Internal resistance of a source is to be neglected. (Take : $E = 9 V, C = 2 μ F$ )

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Important Questions on Electrostatics

MEDIUM

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 2>Q 52

In the circuit shown in figure, the capacitors are initially uncharged. The current through resistor $P Q$ just after closing the switch is,

Question Image

MEDIUM

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 2>Q 53

The capacitor shown in the figure is initially uncharged, the battery is ideal. The switch

S

is closed at time

t = 0

, then the time after which the energy stored in the capacitor becomes one-fourth of the energy stored in it in steady-state is:

Question Image

MEDIUM

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 2>Q 54

The figure shows an experimental plot discharging of a capacitor in an $R C$ circuit. The time constant $τ$ of this circuit lies between

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HARD

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 3>Q 1

Point charges

+ 4 q

- q

and

+ 4 q

are kept on the

x

-axis at points

X = 0

X = a

and

X = 2 a

, respectively, then

HARD

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 3>Q 2

Five-point charges each of value

+ q

are placed on five vertices of a regular hexagon of side

L

. What is the magnitude of the force on a point charge of value

- q

placed at the center of the hexagon?

HARD

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 3>Q 3

A rod of length

L

has a total charge

Q

distributed uniformly along its length. It is bent in the shape of a semicircle. Find the magnitude of the electric field at the centre of curvature of the semicircle.

HARD

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 3>Q 4

As shown in the figure, a point charge

q_{1} = + 1 \times 10^{- 6} C

is placed at the origin in

x y

-plane and another point charge

q_{2} = + 3 \times 10^{- 6} C

is placed at the coordinate

(10, 0) .

In that case, which of the following graph

(s)

shows most correctly the electric field vector in

E_{x}

x

-direction ?

HARD

JEE Main

IMPORTANT

Physics Crash Course JEE Main>Chapter 13 - Electrostatics>Level 3>Q 5

A particle of mass

10^{- 3} kg

and charge

1.0 C

is initially at rest. At time

t = 0,

the particle comes under the influence of an electric field

\vec{E} (t) = E_{0} \sin (ω t) \hat{i}

, where

E_{0} = 1.0 N C^{- 1}

and

ω = 10^{3} rad s^{- 1} .

Consider the effect of only the electrical force on the particle. Then the maximum speed in

m s^{- 1}

attained by the particle at subsequent times is:

Find the charge (in μC) on the capacitor C in the figure shown. Internal resistance of a source is to be neglected. (Take : E=9 V, C=2μF)

Important Questions on Electrostatics

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Find the charge (in $μ C$ ) on the capacitor $C$ in the figure shown. Internal resistance of a source is to be neglected. (Take : $E = 9 V, C = 2 μ F$ )