ECAT Pre Computer Science Chapter 12 online mcq test with answers for Physics chapter 12 (Electrostatics)

ECAT Physics Chapter 12 Electrostatics Online Test

Sr. #	Questions	Answers Choice
1	One electron volt is equal to	1.6 x 1019eV 6.25 x 1018 eV 1.6 x 1018 eV 6.25 x 1019eV
2	When an electron is accelerated through a P.D. of an one volt, it will acquire energy equal to	One joule One erg One electron volt None of these
3	The earth's potential is taken as	Negative Positive Zero Infinite
4	The electric lines of force are	Imaginary Physically existing everywhere Physically existing near the charge All of the above
5	Which one of the following is the unit of electric field intensity	JC<sup>-1</sup> Vm<sup>-1</sup> Cm<sup>-1</sup> CJ<sup>-1</sup>
6	A closed surface contains two equal and opposite charges. The net electric flux from the surface will be	Negative Positive Infinite Zero
7	The electric flux from a closed surface	Is independent of the shape of the surface Depends on the charge enclosed by the surface Both a and b None of the above
8	The electric flux is linked with a surface will be maximum when	The surface is held parallel to the electric field The surface is held perpendicular to the electric field The surface makes an angle of 45<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">° with the electric field</span> All of the above
9	The SI unit of electric flux is	Weber Nm<sup>2</sup>C<sup>-1</sup> NmC<sup>-1</sup> Nm<sup>-2</sup>C
10	Electric flux is defined by the relation	E.A. E x A E/A none of these
11	The dot product of electric field intensity E and vector area A is called	Electric potential Electric flux Electric field Magnetic field
12	The SI unit of electric field intensity is	CN<sup>-1</sup> NC<sup>-1</sup>or Vm<sup>-1</sup> JC<sup>-1</sup> AV<sup>-1</sup>
13	An electric charge at rest is	Only an electric field Only a magnetic field Both electric and magnetic fields None of the above
14	A charge of 0.1 c accelerated through a potential difference of 1000V acquires kinetic energy	200 J 100 J 1000 J 400 J
15	One coulomb of charge is created by	10 electrons 1.6 x 10<sup>-19</sup>electrons 6.25 x 10<sup>18</sup>electrons 6.25 x 10<sup>21</sup>electrons

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