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Electrostatics - Interview Questions and Answers

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1. The direction of electric field due +0 positive charge is .
A. away from the charge
B. towards the charge
C. both (a) and (b)
D. none of the above
Explanation:
2. Which of the following statement is true ?
A. The current in the discharging capacitor grows linearly
B. The current in the dicharging capacitor grows exponentially
C. The current in the discharging capacitor decays exponentially
D. The current in the discharging capacitor decreases constantly
Explanation:
3. The minimum value of potential gradient in a cable occurs in
A. insulation
B. conductor
C. outer sheath
D. uniformly all over
Explanation:
4. The bridge used for the measurement of the value of the capacitance is
A. Wien's bridge
B. Wheatstone bridge
C. Schering bridge
D. Hay's bridge
Explanation:
5. Which of the following statements is correct ?
A. Mica capacitors are available in capacitance values of 5 to 20 \iF
B. Air capapitors have a black band to indicate the outside foil
C. Electrolytic capacitors must be connected in correct polarity
D. Ceramic capacitors must be con�nected in correct polarity
Explanation: