# Practice Test: Question Set - 01

1. "The surface integral of the normal component of the electric displacement D over any closed surface equals the charge enclosed by the surface".
The above statement is associated with
(A) Gauss's law
(B) Kirchhoff s law
(D) Lenz's law

2. The phenomenon of an uncharged body getting charged merely by the nearness of a charged body is known as
(A) Photoelectric effect
(B) Chemical effect
(C) Magnetic effect
(D) Induction

3. 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

4. If an ohmmeter reading immediately goes practically to zero and stays there, capacitor is
(A) Charged
(B) Short-circuited
(C) Lossy
(D) Satisfactory

5. A region around a stationary electric charge has
(A) An electric field
(B) A magnetic field
(C) Both (A) and (B)
(D) None of the above

6. A condenser suitable for D.C. only is
(A) Metallic plate variable gang condenser
(B) Metallic paper capacitor
(C) Oil impregnated paper condenser
(D) Poled aluminium electrolytic condenser

7. Two plates of a parallel plate capacitor after being charged from a constant voltage source are separated apart by means of insulated handles, then the
(A) Voltage across the plates increases
(B) Voltage across the plates decreases
(C) Charge on the capacitor decreases
(D) Charge on the capacitor increases

8. Which of the following capacitors will have the least variation?
(A) Paper capacitor
(B) Ceramic capacitor
(C) Silver plated mica capacitor
(D) None of the above

9. Air capacitors are generally available in the range
(A) 10 to 400 pF
(B) 1 to 20 pF
(C) 100 to 900 pF
(D) 20 to 100 pF

10. While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is
(A) Short-circuited
(B) Open circuited
(C) Alright
(D) Leaky

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