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WorksheetsMCQ CAPACITOR Matriculation
Total questions: 20
Worksheet time: 40mins
Three capacitors each of the capacity C are given. The resultant capacity 2/3 C can be obtained by using them
All in series
All in parallel
Two in parallel and third in the series with this combination
Two in series and third in parallel across this combination
If three 10 μF capacitors are connected in parallel the, net capacitance is
20 μF
30 μF
50 μF
40 μF
If three 15 μF capacitors are connected in series, the net capacitance is
5 μF
30 μF
45 μF
50 μF
In a capacitor the electric charge is stored in
Metal plates
Dielectric
Both A and B
None of the above
A capacitor consists of
Two insulators separated by a conductor
Two conductors separated by an insulator
Two insulators only
Two conductors only
The units of capacitance are
Volts/coulomb
Farad
Coulomb
Ohms
The capacitance of 1 μF equals
10e-12 F
10e-8 F
10e-6 F
10e-4 F
The capacitance C is charged through a resistor R. The time constant of the charging circuit is given by
C/R
1/RC
RC
R/C
9. Capacitor is a device used to__________
store electrical energy
vary the resistance
store magnetic energy
dissipate energy
What is the value of capacitance of a capacitor which has a voltage of 4V and has 16C of charge?
2F
4F
6F
8F
Ability of capacitor to store the charge is measured as its
performance
resistance
Capacitance
Durability
Calculate the time constant of a series RC circuit consisting of a 100microF capacitor in series with a 100ohm resistor.
0.1 s
0.1 ms
0.01 s
0.01 ms
Capacitors charge and discharge in __________ manner.
Linear
Constant
Square
Exponential
Which of the following depends on charging and discharging rate of a capacitor?
Time constant
Current
Power
Voltage
Which among the following equations is incorrect?
Q=CV
Q=C/V
V=Q/C
C=Q/V
What happens to the capacitor when the capacitor voltage is equal to the source voltage?
The charging phase of the capacitor is over
The discharging phase of the capacitor is over
The capacitor is switched off
The capacitor is switched on
What is the initial current while charging a capacitor?
High
Low
0
Cannot be determined
What is the final current while charging a capacitor?
High
Zero
Infinity
Low
When will be capacitors fully charged
When voltage is zero
When the supply voltage is equal to the capacitor voltage
When voltage is infinity
When capacitor voltage is equal to half the supply voltage
A capacitor is charged to a voltage of 400V and has a resistance of 20ohm. Calculate the final value of the discharge current.
10 A
0 A
Infinity
20A
