General Science/Basic Science Capacitor Sample Test,Sample questions

Question:
.The electric field intensity in between the parallel plates of a capacitor is

1.?/2?o

2.Q/2A?o

3.V/d

4.Vd

Posted Date:-2021-10-19 16:50:04


Question:
1 pF is equal to

1.10-6 F

2.10-12 F

3.10-3 F

4.10-9 F

Posted Date:-2021-10-19 16:50:04


Question:
Capacitor stores

1.magnetic energy

2.chemical energy

3.electrical energy

4.heat energy

Posted Date:-2021-10-19 16:50:04


Question:
Electrical charges can be stored in

1.transformers

2.capacitors

3.inductors

4.resistors

Posted Date:-2021-10-19 16:50:04


Question:
If a negatively charged conductor is brought near a positively charged conductor  its potential

1.increases

2.decreases

3.remains the same

4.becomes zero

Posted Date:-2021-10-19 16:50:04


Question:
In parallel combination of capacitors

1.charges on the capacitors are same

2.potential difference across each capacitor is same

3.current on the capacitors is same

4.both charges end potentials are same

Posted Date:-2021-10-19 16:50:04


Question:
One microfarad is equal to

1.10-5 F

2.10-3 F

3.10-9 F

4.10-6 F

Posted Date:-2021-10-19 16:50:04


Question:
Pick out the correct formula connecting capacity C voltage V and the charge Q

1.C = V/Q

2.C = Q/V

3.C = VQ

4.C = QV

Posted Date:-2021-10-19 16:50:04


Question:
The area of each plate of a parallel plate capacitor is 4 ? 10-2m2. If the thickness of the dielectric placed in between the plates is 10-3 and the relative permittivity of the dielectric is 7 then the capacitance of the capacitor

1.2.478 ? 10-9F

2.0.2478 ? 10-9F

3.2.478 ? 10+9F

4.2.478 F

Posted Date:-2021-10-19 16:50:04


Question:
The capacitance of a capacitor when the distance between the two plates is doubled

1.reduce to zero

2.is doubled

3.remains the same

4.is halved

Posted Date:-2021-10-19 16:50:04


Question:
The capacitance of a parallel plate capacitor is

1.A?r/d

2.Ad/ ?o ?r

3.A ?o ?r/d

4.d/ A ?o ?r

Posted Date:-2021-10-19 16:50:04


Question:
The capacitance of a parallel plate capacitor is 2�F.If the surface area of the palte is doubled and the distance between the plates is halved what will be the capacitance of the condensor

1.6 �F

2.2 �F

3.8 �F

4.1 �F

Posted Date:-2021-10-19 16:50:04


Question:
The charge that can be stored in a 50�F capacitor connected to a source of potential difference of 20V is

1.1 �C

2.10-3 C

3.1 C

4.1000 C

Posted Date:-2021-10-19 16:50:04


Question:
The dielectric inside a capacitor basically increases

1.voltage rating

2.current rating

3.capacitance

4.power rating

Posted Date:-2021-10-19 16:50:04


Question:
The potential difference between the plates of a 20�F capacitor with a charge of 0.01 coulomb is

1.2 ? 10-7 volts

2.2 ? 10-5 volts

3.50 volts

4.500 volts

Posted Date:-2021-10-19 16:50:04


Question:
The ratio of the charge to potential is

1.resistance

2.current

3.temperature co-efficient of resistance

4.capacitance

Posted Date:-2021-10-19 16:50:04


Question:
The unit of capacitance is

1.coulomb

2.joule

3.volt

4.farad

Posted Date:-2021-10-19 16:50:04


Question:
Two capacitors of capacitance 10�F and 40�F when connected in series will yield an equivalent capacitance of

1.50 �F

2.25 �F

3.8 �F

4.30 �F

Posted Date:-2021-10-19 16:50:04


Question:
When a glass is introduced in between the plates of a parallel plate air condenser its capacitance will

1.not charge

2.decrease

3.increase

4.tend to zero

Posted Date:-2021-10-19 16:50:04


Question:
When the charging source is disconnected the charges given to the plates of an ideal capacitor

1.increases

2.decreases

3.becomes zero

4.remains the same

Posted Date:-2021-10-19 16:50:04


Question:
When two capacitors of capacitances 2 pF and 6 pF connected in parallel the effective capacitance is

1.8 pF

2.12 pF

3.3/2 pF

4.4 pF

Posted Date:-2021-10-19 16:50:04


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