# NCERT Class 12/MCQ Questions for Class 12 Physics Chapter 1 Electric Charges and Field Sample Test,Sample questions

## Question: `1 coulomb is equal to:`

1.3 × 109 e.s.u.

2.13 × 109 e.s.u

3.3 × 1010 e.s.u

4.13 × 1010 e.s.u.

1.1 J

2.1 JC-1

3.1 CJ-1

4.1 JC

1.1 N

2.1 Mm-1

3.1 NC-1

4.1 J-1

## Question: `A parrot comes and sits on a bare high power line. It will:`

1. experience a mild shock ‘

2.experience a strong shock

3.get killed instantaneously

4.not be affected practically

## Question: `A soap bubble is given a negative charge, then its radius:`

1.increases

2.decreases

3.Remains unchanged

4.may increase or decrease

## Question: `A soap bubble is given a negative charge, then its radius:`

1.increases

2.decreases

3.Remains unchanged

4.may increase or decrease

## Question: `An electron is sent in an electric field of magnitude 9.1 × 106NC-1. The acceleration produced in it is :`

1.1.6 ms-2

2.1.6 × 1018ms-2

3.0.8 × 1018 ms-2

4.0.8 × 1018 ms-2

## Question: `Corona discharge takes place:`

1.at the surface of a conductor

2.near the sharp points of a conductor

3.outside the conductor

4.at the centre of the conductor

1.1

2.4

3.116

4.16

## Question: `Electric field in a cavity of metal:`

1.depends upon the surroundings

2.depends upon the size of cavity

3. is always zero

4.is not necessarily zero

## Question: `If an electric dipole is kept in a uniform electric field then resultant electric force on it is :`

1.always zero

2.never zero

3.depend upon capacity of dipole

4.None

## Question: `If sphere of bad conductor is given charge then it is distributed on:`

1.surface

2.inside the surface

3.only inside the surface

4.None

## Question: `If two conducting sphere are connected after charging separately then`

1.Electrostatic energy sphere energy will remain conserved

2.Electrostatic energy charges remains conserved

3.Electrostatic energy energy and charge remains conserved

4.None

## Question: `In non-uniform electric field, electric dipole experiences:`

1.torque only

2.torque as well as net force

3.force only

4.None of the above

1.N-1m-2C-2

2.Nm-2C2 (

3. N-1m-2C9

4.Nm-2C2

## Question: `Quantisation of charge implies:`

1.Charge does not exist

2.Charge exists on particles

3.There is a minimum permissible magnitude of charge

4.Charge can’t be created

## Question: `The belt of a Vande Graaf generator gets charge by :`

1.corona discharge (b) (c)

2.induction

3.electrification

4.None of the these

## Question: `The conservation of electric charge implies that:`

1.Charge can’t be created

2.Charge can’t be destroyed

3.The number of charged particle in the universe is constant

4.Simultaneous creation of equal and opposite charges is permissible

1. 0

2.1

3.∞

4.-1

## Question: `The dimensional representation of cu will be :`

1.[MLT4 A2]

2.[M-1L-3T4A2]

3.[ML-2T ]

4.None of the above

## Question: `The graph drawn between V are r for a non-conducting charged solid sphere of radius R for r < R will be :`

1.straight line

2.parabola

3.hyperbola

4.None of the above

1.1 C

2.4.8 × 1-13 C

3.1.6 × 10-19 C

4.1.6 × 1019 C

1.6.25 × 1018

2.625 × 1018

3.6.023 × 1023

4.None

1.6.25 × 1018

2.6.25 × 1017

3.6.25 × 1019

4.1.6 × 1019

1.C

2. Cm-1

3.Cm

4.Nm-1

1.metre/volt

2.Joule/newton

3.Coulomb/newton

4.Newton/coulomb

1.metre/volt

2.Joule/newton

3.Coulomb/newton

4.Newton/coulomb

## Question: `The work done in rotating an electric dipole in an electric field:`

1.W = ME (1 – cos θ)

2.W = ME tan θ

3.W = ME sec θ

4.None

1.+3q

2. +2q

3.-3q

4.-4q

1.4L

2.8L

3.L/4

4.2L

## Question: `When placed in a uniform field, a dipole experiences:`

1.a net force

2.a torque

3.both a net force and torque

4.neither a net force nor a torque

1.Coulomb

2.Newton

3.Volt

4.N/C

## More MCQS

##### R4R Team
R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!