MCQs Physics Chapter 12 - Class 12

#1. Capacitance in medium is:

AЄoЄr/d

AЄo/Єrd

AЄo/d

A/ЄoЄrd

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

Electrodynamics

Electrostatics

Electromagnetism

Electrochemistry

#3. Dimensions of RC =

[T]

[Ωs]

[TC]

[ΩQ]

#4. Capacitor is used to store:

volts

density

potential difference

charges

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

in motion

off and on

in rest

continuous

#6. 1pF =

10^-12 F

10^-3 F

10^-9 F

10^-6 F

#7. 1μF =

10^-9 F

10^-3 F

10^-12 F

10^-6 F

#8. Surface charge density σ =

σ/A

σA

qA

q/A

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

1/2Єo

σ/2Єo

2Єo/σ

σ/Єo

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

1.6 × 10^-19 C

6.673 × 10^-11 C

1.6 × 10^19 C

6.63 × 10^-34 C

#11. 1eV =

1.6 × 10^-25 J

1.6 × 10^-19 J

6.25 × 10^-19 J

6.25 × 10^25 J

#12. 1V=

1J/1C

1C/1J

1JC

All

#13. Capacitance in vacuum is:

AЄo/d

A/Єod

AЄod

Єod/A

#14. Gaussian surface is:

Uniform and Real

Non-Uniform and Imaginary

Non-Uniform and Real

Uniform and Imaginary

#15. The unit of electric flux is:

NC/m2

N2m/C

Nm2/C

C2/Nm

#16. Capacitor stops:

Volts

A.C

D.C

Charges

#17. The Unit for electric field intensity is:

Nm/C

Ns/C

C/Ns

C/Nm

#18. Electric flux is a:

Vector Quantity

All

Base Quantity

Scalar Quantity

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

None

positive

no charge

negative

#20. Wind Shield Wipers works on:

electric field intensity

Ohm's law

Ohm’s law

Gauss' law

Gauss’ law

charging and discharging

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

RxC

RxV

R/V

V/R

#22. Q=±ne is called:

Amount of charge

Quantization of charge

Magnetization of charge

Uniformity of charge

#23. 1Ω x 1F =

1s

1J

1m

1eV

#24. 1J =

6.25 × 10^-19 eV

6.25 × 10^18 eV

1.6 × 10^-19 eV

1.6 × 10^17 eV

#25. Sharks can detect potential difference upto:

mili volt

micro volt

pico volt

nano volt

#26. Formula of Gauss' law is:

Φ=m/Єo

Φ=q/Єo

Φ=Єo/q

Φ=A/Єo

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

COVID

EEG

MRI

ECG

#28. Electric Field Intensity is:

All

Base Quantity

Vector Quantity

Scalar Quantity

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

Double

0

σ/Єo

σ/2Єo

#30. The formula for electric flux is:

Φ=E.A

Φ=0

Φ=B.A

Φ=L.A

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

EEG

MRI

ECG

COVID

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

Φ=Єo/q

Φ=q/Єo

Φ=Єo

Φ=1/Єo

#33. Electric flux will be maximum if:

θ=180

θ=90

θ=0

θ=270

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

electrical energy

work

gravitational energy

friction

#35. Єr has unit:

No

C

V

J

#36. Electric Field Intensity Works on:

All Units

Negative Units

Positive Units

Neutral Units

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

Ampulla of Rectum

Ampulla of Fallopian Tube

Ampullae of Lorenzini

Ampullae of Echinodermata

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

mgd/v

mg/dv

dv/mg

mgv/d

#39. Gauss' law applied to find:

Electric field Intensity

Electric field lines

Electrical energy

Coulomb's law

Coulomb’s law

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

σ/Єo

σ/2Єo

Double

0

#41. Capacitor stores energy in the form of:

magnetic field lines

electric field lines

All

surface charges

#42. Electric flux will be minimum if:

θ=180

θ=90

θ=270

θ=0

#43. Drag force F =

1/6πηrv

6πηrv

6/πηrv

6πη/rv

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

62%

61%

63%

64%

#45. Gauss' law is applicable on:

Hollow Surface

Spherical Surface

Gaussian Surface

Rectangular Surface

MCQs Physics Chapter 12 Electrostatics

Results

#1. Capacitance in medium is:

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

#3. Dimensions of RC =

#4. Capacitor is used to store:

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

#6. 1pF =

#7. 1μF =

#8. Surface charge density σ =

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

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

#11. 1eV =

#12. 1V=

#13. Capacitance in vacuum is:

#14. Gaussian surface is:

#15. The unit of electric flux is:

#16. Capacitor stops:

#17. The Unit for electric field intensity is:

#18. Electric flux is a:

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

#20. Wind Shield Wipers works on:

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

#22. Q=±ne is called:

#23. 1Ω x 1F =

#24. 1J =

#25. Sharks can detect potential difference upto:

#26. Formula of Gauss' law is:

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

#28. Electric Field Intensity is:

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

#30. The formula for electric flux is:

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

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

#33. Electric flux will be maximum if:

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

#35. Єr has unit:

#36. Electric Field Intensity Works on:

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

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

#39. Gauss' law applied to find:

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

#41. Capacitor stores energy in the form of:

#42. Electric flux will be minimum if:

#43. Drag force F =

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

#45. Gauss' law is applicable on:

By Ahsa.Pk

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