MCQs Physics Chapter 12 – Class 12

MCQs Physics Chapter 12 Electrostatics

Results

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#1. Using Gauss' law, value of E for hollow sphere is:

Double

σ/2Єo

σ/Єo

#2. Using Gauss' law, value of E for infinite sheet is:

σ/2Єo

σ/Єo

Double

#3. The formula for electric flux is:

Φ=L.A

Φ=0

Φ=B.A

Φ=E.A

#4. Capacitor stops:

Charges

Volts

D.C

A.C

#5. The branch of Physics deals with charges at rest is:

Electrodynamics

Electromagnetism

Electrostatics

Electrochemistry

#6. In Millikan's Oil Drop Method, the charge on oil drop is:

no charge

negative

None

positive

#7. Using Gauss' Law, value of E between two oppositely charged parallel plates is:

σ/Єo

1/2Єo

2Єo/σ

σ/2Єo

#8. Which device records voltage between points on human skin generated by brain?

COVID

EEG

ECG

MRI

#9. Electric flux is a:

Vector Quantity

All

Base Quantity

Scalar Quantity

#10. 1μF =

10^-12 F

10^-3 F

10^-6 F

10^-9 F

#11. 1V=

1C/1J

All

1J/1C

1JC

#12. Maximum charge deposits on plate of capacitor is:

61%

62%

63%

64%

#13. Electric Field Intensity Works on:

Neutral Units

Positive Units

Negative Units

All Units

#14. Time constant of charging and discharging of a capacitor t =

R/V

RxC

RxV

V/R

#15. Gaussian surface is:

Uniform and Imaginary

Non-Uniform and Real

Non-Uniform and Imaginary

Uniform and Real

#16. Capacitor is used to store:

charges

potential difference

density

volts

#17. In Millikan's Oil Drop Method, the charge on oil drop is due to:

gravitational energy

work

electrical energy

friction

#18. 1eV =

1.6 × 10^-19 J

1.6 × 10^-25 J

6.25 × 10^25 J

6.25 × 10^-19 J

#19. Capacitor stores energy in the form of:

All

magnetic field lines

surface charges

electric field lines

#20. Wind Shield Wipers works on:

Gauss' law

electric field intensity

Ohm's law

charging and discharging

#21. Gauss' law applied to find:

Electric field lines

Electrical energy

Coulomb's law

Electric field Intensity

#22. The unit of electric flux is:

NC/m2

C2/Nm

N2m/C

Nm2/C

#23. Electric flux will be maximum if:

θ=0

θ=270

θ=180

θ=90

#24. Sharks have special organ to detect potential difference is:

Ampullae of Lorenzini

Ampulla of Fallopian Tube

Ampulla of Rectum

Ampullae of Echinodermata

#25. Gauss' law is applicable on:

Hollow Surface

Spherical Surface

Rectangular Surface

Gaussian Surface

#26. Electric Field Intensity is:

Vector Quantity

Scalar Quantity

All

Base Quantity

#27. Capacitance in medium is:

A/ЄoЄrd

AЄoЄr/d

AЄo/d

AЄo/Єrd

#28. Formula of Gauss' law is:

Φ=m/Єo

Φ=A/Єo

Φ=q/Єo

Φ=Єo/q

#29. Charging and Discharging of capacitor is a process:

off and on

continuous

in motion

in rest

#30. Gauss' law for unit positive charge is:

Φ=Єo/q

Φ=q/Єo

Φ=1/Єo

Φ=Єo

#31. Єr has unit:

#32. 1J =

6.25 × 10^-19 eV

1.6 × 10^-19 eV

6.25 × 10^18 eV

1.6 × 10^17 eV

#33. In Millikan's Oil Drop Method, the magnitude of charge q =

mgd/v

dv/mg

mg/dv

mgv/d

#34. 1Ω x 1F =

1eV

#35. The Unit for electric field intensity is:

C/Nm

C/Ns

Nm/C

Ns/C

#36. Capacitance in vacuum is:

A/Єod

Єod/A

AЄo/d

AЄod

#37. 1pF =

10^-9 F

10^-12 F

10^-3 F

10^-6 F

#38. Drag force F =

1/6πηrv

6πηrv

6/πηrv

6πη/rv

#39. Sharks can detect potential difference upto:

nano volt

pico volt

micro volt

mili volt

#40. Dimensions of RC =

[ΩQ]

[T]

[Ωs]

[TC]

#41. In Millikan's Oil drop method, charge on oil droplet is integral multiple of:

1.6 × 10^-19 C

1.6 × 10^19 C

6.63 × 10^-34 C

6.673 × 10^-11 C

#42. Which device records voltage between points on human skin generated by heart?

ECG

COVID

EEG

MRI

#43. Q=±ne is called:

Uniformity of charge

Quantization of charge

Amount of charge

Magnetization of charge

#44. Surface charge density σ =

q/A

σ/A

σA

#45. Electric flux will be minimum if:

θ=270

θ=0

θ=180

θ=90

Finish

MCQs Physics Chapter 12 Electrostatics

Results

#1. Using Gauss' law, value of E for hollow sphere is:

#2. Using Gauss' law, value of E for infinite sheet is:

#3. The formula for electric flux is:

#4. Capacitor stops:

#5. The branch of Physics deals with charges at rest is:

#6. In Millikan's Oil Drop Method, the charge on oil drop is:

#7. Using Gauss' Law, value of E between two oppositely charged parallel plates is:

#8. Which device records voltage between points on human skin generated by brain?

#9. Electric flux is a:

#10. 1μF =

#11. 1V=

#12. Maximum charge deposits on plate of capacitor is:

#13. Electric Field Intensity Works on:

#14. Time constant of charging and discharging of a capacitor t =

#15. Gaussian surface is:

#16. Capacitor is used to store:

#17. In Millikan's Oil Drop Method, the charge on oil drop is due to:

#18. 1eV =

#19. Capacitor stores energy in the form of:

#20. Wind Shield Wipers works on:

#21. Gauss' law applied to find:

#22. The unit of electric flux is:

#23. Electric flux will be maximum if:

#24. Sharks have special organ to detect potential difference is:

#25. Gauss' law is applicable on:

#26. Electric Field Intensity is:

#27. Capacitance in medium is:

#28. Formula of Gauss' law is:

#29. Charging and Discharging of capacitor is a process:

#30. Gauss' law for unit positive charge is:

#31. Єr has unit:

#32. 1J =

#33. In Millikan's Oil Drop Method, the magnitude of charge q =

#34. 1Ω x 1F =

#35. The Unit for electric field intensity is:

#36. Capacitance in vacuum is:

#37. 1pF =

#38. Drag force F =

#39. Sharks can detect potential difference upto:

#40. Dimensions of RC =

#41. In Millikan's Oil drop method, charge on oil droplet is integral multiple of:

#42. Which device records voltage between points on human skin generated by heart?

#43. Q=±ne is called:

#44. Surface charge density σ =

#45. Electric flux will be minimum if:

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