Electrostatics Quiz Questions and Answers - Set 06 - ObjectiveBooks

# Practice Test: Question Set - 06

1. If A.C. voltage is applied to capacitive circuit, the alternating current can flow in the circuit because
(A) Varying voltage produces the charging and discharging currents
(B) Of high peak value
(C) Charging current can flow
(D) Discharge current can flow

2. Which of the following capacitors has relatively shorter shelf life?
(A) Mica capacitor
(B) Electrolytic capacitor
(C) Ceramic capacitor
(D) Paper capacitor

3. A capacitor in a circuit became hot and ultimately exploded due to wrong connections, which type of capacitor it could be?
(A) Paper capacitor
(B) Ceramic capacitor
(C) Electrolytic capacitor
(D) Any of the above

4. Dielectric constant for mica is nearly
(A) 200
(B) 100
(C) 3 to 8
(D) 1 to 2

5. Capacitors are mainly used for radio frequency tuning.
(A) Paper
(B) Air
(C) Mica
(D) Electrolytic

6. The value of E within the field due to a point charge can be found with the help of
(B) Kirchhoff s laws
(C) Coulomb's laws
(D) None of the above

7. 1 volt/meter is same as
(A) 1 meter/coulomb
(B) 1 Newton meter
(C) 1 Newton/meter
(D) 1 joule/coulomb

8. Which of the following statements is correct?
(A) Mica capacitors are available in capacitance values of 5 to 20 uF
(B) Air capacitors have a black band to indicate the outside foil
(C) Electrolytic capacitors must be connected in correct polarity
(D) Ceramic capacitors must be connected in correct polarity

9. When a dielectric is placed in an electric field the field strength
(A) Decreases
(B) Increases
(C) Reduces to zero
(D) Remain unchanged

10. Which of the following capacitors can be used for temperature compensation?
(A) Air capacitor
(B) Ceramic capacitor
(C) Paper capacitor
(D) None of the above

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