Test Details

Electric Field

Tedt

Dec 02, 7:00 PM

30 minutes

Dec 02, 7:30 PM

35.0 marks

MCQ

15 questions

Er. Sunny Kashyap

I love the way everyone lives.

Class Details

Physics

Dropper Jee (Mains +Adv.)

Physics

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Question Text

Question 1 :
State whether true or false: Alcohol and ether are conducting liquids of electricity.

Question 2 :
If $\oint _{ s }^{  }{ \overrightarrow { E } .\overrightarrow { d } s } =0$ over surface, then

Question 3 :
A charge q is enclosed in a cube at its geometrical centre. What is the electric flux associated with one of the faces of cube:

Question 5 :
If the flux of the electric field through a closed surface is zero:

Question 6 :
Two identical small balls of equal charge $q$ and equal mass $m = 0.9 \ kg$ are placed at a separation of $r = 1 \ m$ in air on a rough surface. If coefficient of static friction is $\mu_0 = 0.9$. Find the magnitude of maximum charge $q$ such that both balls remain at rest:-

Question 7 :
A conducting sphere of radius $10cm$ has unknown charge. If the electric field at a distance $20cm$ from the centre of the sphere is $1.2\times { 10 }^{ 3 }N { C }^{ -1 }$ and points radially inwards. The net charge on the sphere is:

Question 8 :
The electric potential due to an infinite sheet of positive charge density $\sigma$ at a point located at a perpendicular distance $Z$ from the sheet is (Assume ${V}_{0}$ to be the potential at the surface of sheet) :

Question 9 :
Two charges are placed at a certain distance apart in air. If a glass slab is introduced between them, the net force between them will :

Question 10 :
A charge $\mathrm{Q}$ is placed at each of the opposite comers of a square. A charge $\mathrm{q}$ is placed at each of the other two corners. If the net electrical force on $\mathrm{Q}$ is zero, then $\mathrm{Q}/\mathrm{q}$ equals:

Question 11 :
Given a uniform electric field $E=5 \times 10^3\hat i N/C$. Find the flux of this field through a square of side $10cm$ on a side whose plane is parallel to YZ-plane :

Question 12 :
A point charge $q$ is situated at a distance $r$ on axis from one end of a thin conducting rod of length $L$ having a charge $Q$ (Uniformly distributed along its length). The magnitude electric force between the two is _______

Question 14 :
A particle of mass $m$ and charge $q$ at rest is released in a uniform electric field between parallel planes of charge $+q$ and $-q$ respectively. The particle accelerates towards the other place a distance $'d'$ away. The speed at which it strikes the opposite plane is:

Question 15 :
A solid ball of radius $R$ has a charge density $\rho$ given by $\rho={\rho}_{o}1-/R$ for $0\le r\le$.the electric field outside the ball is

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