electrostatics MCQs

A. 1000J

B. 200J

C. 100 eV

A. VF/A

B. F/A

C. q/VA

A. 200 joules

B. 150 joules

D. 50 joules

A. sometimes curved

C. always straight

D. none of the above

A. 36 x 108 N

B. 36 x 107 N

C. 36 x 10fa

A. 100 nF

B. 10 F

D. 1000 uF

B. metallic plate variable gang condenser

C. oil impregrated paper condenser

D. metallic paper capacitor

A. 50 uF

B. 40 uF

C. 20 uF

A. A wire cable has distributed capacitance between the conductors

B. The stored energy in a capacitor increases with applied voltage

C. The leakage resistance of ceramic capacitors is generally high

B. proportional to d

C. none of the above

D. inversely proportional to d

B. F/m

C. no units

D. m/F

B. Mica capacitor

C. Both will have identical value of capacitance

D. It depends on applied voltage

B. E= nD2

C. E = jtD

D. E = D2/t

A. milli-coulomb

B. coulomb

C. pico-coulomb

A. 10

B. 1000

C. 100

B. Magnetic

C. Both (A) and (B)

D. None of the above

B. charge will flow from B to A

C. no flow of charge will occur

D. both a and b are possible

A. voltage

B. potential gradient

D. current

A. 5%

B. 20%

C. 15%

A. Weber/meter

B. Farad/sq-m

D. Weber/sq-m

A. Balloon bursts

B. Balloon squeezes

C. Radius decreases

A. series combination

C. both series and parallel combinations

D. none of above

A. Wiens bridge

B. Hays bridge

D. Wheatstone bridge

A. all of the above

B. charge of the charged conductor

C. potential of the charged conductor

A. Air

B. Plastic film

C. Ceramic

A. Mica capacitor

B. Ceramic capacitor

D. Paper capacitor

A. accurate value

B. stable operation

C. low losses

A. permittivity slightly more than that of air

B. low permittivity

C. permittivity same as that of air

A. magnetic hield

B. nuclear field

C. gravitational field

B. proportional to applied voltage

C. proportional to value of capacitance

D. both (B) and (C) above

B. silver-coated insulators

C. insulators separated by a dielectric

D. ceramic plates and one mica disc

A. thickness

B. temperature

C. moisture content

E. none of the above

A. very small

B. small

D. zero

A. open circuited

C. short-circuited

D. alright

B. Mica capacitor

C. Paper capacitor

D. Aluminium foil capacitor

A. charge on the capacitor decreases

B. charge on the capacitor increases

D. Voltage across the plates increases

B. It will melt

C. It will become magnetic

D. Its molecular structure will get changed

A. chemical effect

B. magnetic effect

C. pholoelectric effect

A. 8.854 x KT11 F/m

B. 8.854 x 1(T9 F/m)

C. 8.854 x 10?12 F/m

A. good conductor

B. semi conductor

C. resistor

B. Paper capacitor

C. Both will be of equal size

D. None of the above

B. Capacitors

C. Charges in motion

D. Electric fields

A. electric flux

C. none of the above

D. magnetic flux density

A. Paper capacitor

C. Any-of the above

D. Ceramic capacitor

A. Electrolytic

B. Paper

D. Mica

A. similar charges repel each other

B. dissimilar charges attract each other

C. repulsion is the sure test of electrification

A. 50 pF

B. 150 pF

C. 200 pF

B. zero

C. any of the above

D. non-uniform

A. Coulomb/meter

B. Coulomb/meter

C. Coulomb/meter

A. glass rod acquires negative charge while silk acquires positive charge

C. both glass rod and silk acquire negative charge

D. both glass rod and silk acquire positive charge