Practice Test: Question Set - 07
1. Capacitance increases with
- (A) Increase in plate area and decrease in distance
between the plates
- (B) Increase in plate area and distance between the
plates
- (C) Decrease in plate area and value of applied
voltage
- (D) Reduction in plate area and distance between the
plates
2. "The total electric flux through any closed surface surrounding charges is equal to the amount of charge enclosed". The above statement is associated with
- (A) Coulomb's square law
- (B) Gauss's law
- (C) Maxwell's first law
- (D) Maxwell's second law
3. The ability of charged bodies to exert force on one another is attributed to the existence of
- (A) Electrons
- (B) Protons
- (C) Neutrons
- (D) Electric field
4. When a dielectric slab is introduced in a parallel plate capacitor, the potential difference between plates will
- (A) Remain uncharged
- (B) Decrease
- (C) Increase
- (D) Become zero
5. The value of dielectric constant for vacuum is taken as
- (A) Zero
- (B) 1
- (C) 4
- (D) 10
6. Electric intensity at any point in an electric field is equal to the at that point.
- (A) Electric flux
- (B) Magnetic flux density
- (C) Potential gradient
- (D) None of the above
7. The capacitance C is charged through a resistance R. The time constant of the charging circuit is given by
- (A) CIR
- (B) 1/RC
- (C) RC
- (D) RIC
8. If a third equal and similar charge is placed between two equal and similar charges, then this third charge will
- (A) Move out of the field of influence of the
two charges
- (B) Remain in stable equilibrium
- (C) Not be in equilibrium
- (D) Be in unstable equilibrium
9. In a capacitor, the electric charge is stored in
- (A) Metal plates
- (B) Dielectric
- (C) Dielectric as well as metal plates
- (D) None of the above
10. Out of the following capacitors of identical rating which one will have the smallest dimensions?
- (A) Aluminium foil capacitor
- (B) Mica capacitor
- (C) Ceramic capacitor
- (D) Paper capacitor
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