1. . Electrostatics is a branch of electricity concerned with:
(A) Energy flowing across a gap between the conductors
(B) Charges at rest
(C) Charges in motion
(D) Energy in the form of charges
2. . Same charges ……… each other:
(A) Attract
(B) Repel
(C) Not affected
(D) None
3. . Opposite charges ……… each other:
(A) Attract
(B) Repel
(C) Not affected
(D) None
4. . Capacitor stores electric charge in:
(A) Plates
(B) Dielectric
(C) Battery
(D) Both a & b
5. . Before charging, the number of free electrons on both plates of the capacitor is:
(A) Same
(B) Different
(C) Double
(D) Anyone
6. . Capacitor charged with this source:
(A) AC
(B) DC
(C) 1st AC, later DC
(D) Both a & b
7. . Capacitance of capacitors connected in parallel increases:
(A) With applied voltage
(B) With decreasing area of plates
(C) With decreasing thickness of the dielectric
(D) With increasing thickness of the dielectric
8. . Unit of energy stored in a capacitor is:
(A) Farad
(B) Joule
(C) Coulomb
(D) Henry
9. . Determine capacitance:
(A) I/Q
(B) Q/V
(C) V/Q
(D) QV
10. . Charge on a 10μF capacitor when voltage is 10V:
(A) 100μC
(B) 0.1μC
(C) 0.01μC
(D) 0.001μC
11. . With increasing capacitors in series, total capacitance:
(A) Decreases
(B) Increases
(C) Remains same
(D) None
12. . Unit of capacitance is:
(A) Volt
(B) Ampere
(C) Henry
(D) Farad
13. . The ability of a capacitor to store charge is called:
(A) Capacitance
(B) Resistance
(C) Friction
(D) Coulomb's force
14. . A device that stores charge is called:
(A) Resistor
(B) Inductor
(C) Capacitor
(D) Transistor
15. . Total capacitance of 10μF, 20μF, 22μF, 100μF in parallel is:
(A) 2.43μF
(B) 4.86μF
(C) 100μF
(D) 152μF
16. . Total capacitance of 2μF, 4μF, 10μF in series is less than:
(A) 2.2μF
(B) 4μF
(C) 10μF
(D) 1.5μF
17. . 0.00022 F capacitor equals how many microfarads?
(A) 22μF
(B) 220μF
(C) 2,200μF
(D) 22,200μF
18. . Capacitance when Q = 60μC and V = 12V:
(A) 5μF
(B) 720μF
(C) 50μF
(D) 12μF
19. . Voltage across a 330pF capacitor connected to 6V DC source:
(A) 3V
(B) 6V
(C) 4V
(D) 0V
20. . Charge of each plate of capacitor is measured in:
(A) Volt
(B) Current
(C) Coulomb
(D) Watt
21. . Charge on capacitor plates is directly proportional to:
(A) Current
(B) Electric field intensity
(C) Potential difference
(D) Resistance
22. . In a series RC circuit, when voltage across resistor is zero, the capacitor is:
(A) Charging
(B) Fully charged
(C) Discharging
(D) Fully discharged
23. . Initial current while charging a capacitor:
(A) High
(B) Low
(C) 0
(D) Cannot be determined
24. . As a capacitor is being charged, current flowing into it will:
(A) Increase
(B) Decrease
(C) Remain same
(D) Maximum
25. . Final current while charging a capacitor:
(A) High
(B) Zero
(C) Infinity
(D) Low
26. . Capacitors are fully charged when:
(A) Voltage is zero
(B) Supply voltage equals capacitor voltage
(C) Voltage is infinity
(D) Capacitor voltage is half supply voltage
27. . As a capacitor is being charged, voltage across its terminals will:
(A) Increase
(B) Decrease
(C) Remain same
(D) Oppose the source