12th class Physics chapter 12 online mcq test with answers for ICS part 2 Physics Chapter 12 (Electrostatics)

Physics ICS Part 2 Chapter 12 Online MCQ's Test

Sr. #	Questions	Answers Choice
1	If the medium between the charges is not free space then electrostatic force will.be	Increase Decrease Remain same None of these
2	Two parrallel, metal plates are a distance 8.00 m apart. The electric field between the plates in uniform, Directed toward the right , and has a magnitude of 4.00 N/C. If an ion of charge +2e is released at rest at the left-hand plate. What is its kinetic energy when reaches the right-hand plate?	4 eV 64 eV 32 eV 16 eV
3	The electric field in some region of of space is uniform in magnitude and direction. Which one of the following five statements best desccribes the volume charge density (ρ) , in this region of space?	<span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">ρ = 0</span> <span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">ρ decreases linearly in the direction of the electric field</span> <span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">ρ increases linearly in the direction of the electric field</span> <span style="color: rgb(34, 34, 34); font-family: arial, sans-serif; font-size: 16px;">ρ has a uniform value throughout the region</span> <br>
4	A one microfarad capacitor of a TV is subjected to 4000 V potencial difference.The energy stored in capacitor is:	8 j 16 j 4 x 10<sup>-3</sup>j 2 x 10<sup>-3</sup>j
5	A capacitor is charged with a battery and then it is disconnected. A slab of dielectric is now inserted between the plates, Then	The charge in the plates reduces and potencial difference increase Potencial difference between the plates increase, stored energy decreases and charge remains the same Potencial difference between the plates decreases, stored energy decreases and charge remains unchanged None of them
6	A proton is about 1840 time than an electron. When it is accelerated by a potencial difference if 1 kV, its kinetic energy will be:	1884 ke V 1/1840 keV 1 keV 920 keV
7	Electric potencial of earth is taken to be zero because the earth is good:	Semiconductor Conductor Insulator Dielectric
8	Some charge is being given to a conductor. Then its potencial	Its maximum at surface Its maximum at Its maximum at center Is remain same throughout the conductor Is maximum somewhere between surface and centre
9	A charge Q is divided into tweo parts q and Q-q and seperated by a distance R. The force of equilibrium between them will be maximum when:	q=Q/4 q=Q/2 q=Q None of these
10	Coulomb's force is:	Conservative force None conservative force Similar to frictional force None of the above
11	The leV =	1.6x10-19C 1.6x10-11J 1.6x10-19J 1.6x10-11C
12	Electric potential at a distance ''r'' from ''q'' is:	V<sub>r</sub> = 1/54πε<sub>∘</sub>q/r<sub>2</sub> Vr=1/4πε<sub>∘</sub><sup>2</sup>q/r V<sub>r</sub>=1/4πε<sub>∘</sub>2q/r V<sub>r</sub>=1/4πε<sub>∘</sub>q<sup>2</sup>/r
13	The electrical intensity is equal to:	-Δr/Δv Δv/Δr Δv/Δv -Δv/Δr
14	Electric intensity due to an infinite sheet of charge is:	∂/2ε<sub>∘</sub> ∂/rε<sub>∘</sub> ∂/r2ε<sub>∘</sub> none of these
15	Net charge enclosed by Gaussian surface is:	zero maximum depend on intensity none of all
16	Flux through any closed surface is:	1/ε<sup>2</sup><sub>∘</sub> times the total charge enclosed in it ε<sup>2</sup><sub>∘</sub> time the total charge enclosed in it 1/ε<sub>∘</sub> ties the total charge enclosed in ti ε<sub>∘</sub> time the total charge enclosed in it
17	The total flux through a closed surface.	Directly proportional to shape and geometry Independent of medium Depend on shape and geometry Dependent on medium and the charge enclosed

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