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Electrostatics - Interview Questions and Answers

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111. What will happen to an insulating medium if voltage more than the breakdown voltage is applied on it ?
A. It will become magnetic
B. It will melt
C. It will get punctured or cracked
D. Its molecular structure will get changed
Explanation:
112. In a cable capacitor, voltage gradient ismaximum at the surface of the
A. earth
B. conduction
C. sheath
D. insulator
Explanation:
113. The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to ______ percent of its______value.
A. 37, initial
B. 63.2, initial
C. 63.2, final
D. 37, final
Explanation:
114. The value of E within the field due to a point charge can be found with the help of
A. Faraday's laws
B. Kirchhoff s laws
C. Coulomb's laws
D. none of the above
Explanation:
115. A capacitor consists of two
A. ceramic plates and one mica disc
B. insulators separated by a dielectric
C. silver-coated insulators
D. conductors separated by an insulator
Explanation:
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