MCQs Physics Chapter 12 - Class 12

#1. 1eV =

6.25 × 10^25 J

1.6 × 10^-25 J

6.25 × 10^-19 J

1.6 × 10^-19 J

#2. The Unit for electric field intensity is:

Nm/C

C/Ns

C/Nm

Ns/C

#3. 1V=

1JC

All

1J/1C

1C/1J

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

ECG

EEG

COVID

MRI

#5. Capacitance in medium is:

A/ЄoЄrd

AЄo/d

AЄo/Єrd

AЄoЄr/d

#6. Capacitance in vacuum is:

AЄo/d

A/Єod

AЄod

Єod/A

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

0

σ/Єo

Double

σ/2Єo

#8. Capacitor stops:

A.C

D.C

Charges

Volts

#9. 1μF =

10^-3 F

10^-12 F

10^-9 F

10^-6 F

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

Φ=1/Єo

Φ=Єo

Φ=q/Єo

Φ=Єo/q

#11. Gauss' law is applicable on:

Spherical Surface

Hollow Surface

Rectangular Surface

Gaussian Surface

#12. Єr has unit:

J

C

V

No

#13. 1J =

6.25 × 10^-19 eV

6.25 × 10^18 eV

1.6 × 10^17 eV

1.6 × 10^-19 eV

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

Electrostatics

Electromagnetism

Electrochemistry

Electrodynamics

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

negative

None

no charge

positive

#16. 1Ω x 1F =

1J

1m

1s

1eV

#17. Capacitor stores energy in the form of:

surface charges

magnetic field lines

electric field lines

All

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

EEG

ECG

MRI

COVID

#19. Wind Shield Wipers works on:

Gauss' law

electric field intensity

charging and discharging

Ohm's law

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

63%

62%

61%

64%

#21. The unit of electric flux is:

C2/Nm

NC/m2

Nm2/C

N2m/C

#22. Electric flux will be maximum if:

θ=90

θ=180

θ=270

θ=0

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

1.6 × 10^19 C

6.63 × 10^-34 C

1.6 × 10^-19 C

6.673 × 10^-11 C

#24. Gauss' law applied to find:

Electric field Intensity

Electrical energy

Electric field lines

Coulomb's law

#25. The formula for electric flux is:

Φ=L.A

Φ=E.A

Φ=0

Φ=B.A

#26. 1pF =

10^-12 F

10^-9 F

10^-3 F

10^-6 F

#27. Electric Field Intensity Works on:

All Units

Neutral Units

Positive Units

Negative Units

#28. Sharks can detect potential difference upto:

mili volt

micro volt

nano volt

pico volt

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

in rest

continuous

in motion

off and on

#30. Capacitor is used to store:

volts

charges

density

potential difference

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

gravitational energy

friction

work

electrical energy

#32. Drag force F =

6πη/rv

1/6πηrv

6πηrv

6/πηrv

#33. Gaussian surface is:

Non-Uniform and Imaginary

Uniform and Real

Uniform and Imaginary

Non-Uniform and Real

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

mg/dv

mgv/d

dv/mg

mgd/v

#35. Electric flux is a:

Scalar Quantity

Base Quantity

Vector Quantity

All

#36. Electric flux will be minimum if:

θ=270

θ=180

θ=0

θ=90

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

σ/Єo

Double

σ/2Єo

0

#38. Surface charge density σ =

q/A

σ/A

qA

σA

#39. Electric Field Intensity is:

Scalar Quantity

Base Quantity

All

Vector Quantity

#40. Q=±ne is called:

Uniformity of charge

Quantization of charge

Amount of charge

Magnetization of charge

#41. Formula of Gauss' law is:

Φ=m/Єo

Φ=q/Єo

Φ=A/Єo

Φ=Єo/q

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

2Єo/σ

1/2Єo

σ/2Єo

σ/Єo

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

Ampullae of Lorenzini

Ampulla of Rectum

Ampullae of Echinodermata

Ampulla of Fallopian Tube

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

RxC

RxV

V/R

R/V

#45. Dimensions of RC =

[ΩQ]

[TC]

[Ωs]

[T]

MCQs Physics Chapter 12 Electrostatics

Results

#1. 1eV =

#2. The Unit for electric field intensity is:

#3. 1V=

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

#5. Capacitance in medium is:

#6. Capacitance in vacuum is:

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

#8. Capacitor stops:

#9. 1μF =

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

#11. Gauss' law is applicable on:

#12. Єr has unit:

#13. 1J =

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

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

#16. 1Ω x 1F =

#17. Capacitor stores energy in the form of:

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

#19. Wind Shield Wipers works on:

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

#21. The unit of electric flux is:

#22. Electric flux will be maximum if:

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

#24. Gauss' law applied to find:

#25. The formula for electric flux is:

#26. 1pF =

#27. Electric Field Intensity Works on:

#28. Sharks can detect potential difference upto:

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

#30. Capacitor is used to store:

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

#32. Drag force F =

#33. Gaussian surface is:

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

#35. Electric flux is a:

#36. Electric flux will be minimum if:

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

#38. Surface charge density σ =

#39. Electric Field Intensity is:

#40. Q=±ne is called:

#41. Formula of Gauss' law is:

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

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

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

#45. Dimensions of RC =

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