Electrostatics-and-Capacitance-Quiz-1

Electrostatics and Capacitance Quiz-1

Dear Readers,

As per analysis for previous years, it has been observed that students preparing for NEET find Physics out of all the sections to be complex to handle and the majority of them are not able to comprehend the reason behind it. This problem arises especially because these aspirants appearing for the examination are more inclined to have a keen interest in Biology due to their medical background. 

Furthermore, sections such as Physics are dominantly based on theories, laws, numerical in comparison to a section of Biology which is more of fact-based, life sciences, and includes substantial explanations. By using the table given below, you easily and directly access to the topics and respective links of MCQs. Moreover, to make learning smooth and efficient, all the questions come with their supportive solutions to make utilization of time even more productive. Students will be covered for all their studies as the topics are available from basics to even the most advanced. 

Q1. A sphere of radius 1 m encloses a charge of 5 μC. Another charge of -5 μC is placed inside the sphere. The net electric flux would be

•  Double
•  Four Times
•  Zero
•  None of these

Solution
                     

Q2.A ball of mass 1 carrying a charge 10^-8 Cmoves from a point A at potential 600 V to a point B at zero potential. The change in its KE is

•  -6×10^-6 erg
•  -6×10^-6 J
•  6×10^-6 J
•  6×10^-6 erg

Solution
                    

Q3.  What is the potential difference between points A and B in the circuit shown?

                                  

•  2 V
•   4 V
•  3 V
•  12 V

Solution
                      

Q4. Figure shows three spherical and equipotential surfaces A, B and C round a point charge q. The potential difference V_A-V_B=V_B-V_C. If t₁ and t₂ be the distance between them. Then

•  t₁=t₂
•  t₁>t₂
•  t₁<t₂
•  t₁≤t₂

Solution
                          

Q5.A square of side ahas charge Qat its centre and charge q at one of the corners. The work required to be done in moving the charge q from the corner to the diagonally opposite corner is

•  Zero
•  Qq/(4πε₀ a)
•  (Qq√2)/(4πε₀ a)
•  Qq/(2πε₀ a)

Solution
                       

Q6. Two metallic spheres of radii 1 cm and 2 cm are given charges of 10^(-2) C and 5×10^(-2) C respectively. If these are connected by a conducting wire, the final charge on the smaller sphere is

•  3×10^-2 C
• 1×10^-2 C
•  4×10^-2 C
•  2×10^-2 C

Solution
                      

Q7.Capacitance of a capacitor made by a thin metal foil is 2μF. If the foil is folded with paper of thickness 0.15 mm, dielectric constant of paper is 2.5 and width of paper is 400 mm, the length of foil will be

•  1.34 m
•  0.34 m
•  13.4 m
•  33.9 m

Solution
                         

Q8.The plates of a parallel plate capacitor with air as medium are separated by a distance of 8 mm. A medium of dielectric constant 2 and thickness 4 mm having the same area is introduced between the plates. For the capacitance to remain the same , the distance between the plates is

•  8 mm
•  6 mm
•  4 mm
•  12 mm

Solution
                      

Q9.If the plates of a parallel plate capacitor are not equal in area, then quantity of charge

•  On the plates will be same but nature of charge will differ
•  On the plates as well as nature of charge will be different
•  On the plates will be different but nature of charge will be same
•  As well as nature of charge will be same

Solution
If the plates of a parallel plate capacitor are not equal in area, then quantity of charge on the plates will be same but nature of charge will differ.

Q10. A hollow metal sphere of radius 10 cm is charged such that the potential on its surface becomes 80V. The potential at the centre of the sphere is

•  80 V
•  800 V
•  8 V
• Zero

Solution
The potential at the centre of the sphere is 80 V because it remains same at each point under the metallic hollow sphere.