1. Which particles act as a current carrier in a metallic conductor?
a) only electrons
b) only ions
c) electrons and defect elections
d) electrons and ions
ans. a
2. If an atom looses one or more electrons it becomes
a) electrically neutral
b) electrically positive
c) electrically negative
d) a neutral ion
ans. b
3. What other effect of the electric current is also present in the fluorescent lamp and causes losses in the efficiency of the lamp?
a) The chemical effect
b) The magnetic effect
c) The heating effect
d) The chemical and the magnetic effect
ans. b
4. What is the unit of charge ?
a) Volt-ampere VA
b) Henry H
c) Farad F
d) coulomb C
ans. d
5. Static electricity is produced by
a) chemical reaction
b) friction
c) induction
d) both friction and induction
ans. b
6. The sure test of electrification is
a) induction
b) friction
c) repulsion
d) attraction
ans. c
7. The space surrounding a charge body , within which the influence of its charge extends is called
a) coulombs
b) electric field
c) electric intensity
d) lines of force
ans. b
8. Paper condenser is a type of
a) variable condenser
b) electrolytic condenser
c) fixed condenser
d) none of these
ans. c
9. Mica or ceramic condenser is a type of
a) variable condenser
b) electrolytic condenser
c) fixed condenser
d) none of these
a) only electrons
b) only ions
c) electrons and defect elections
d) electrons and ions
ans. a
2. If an atom looses one or more electrons it becomes
a) electrically neutral
b) electrically positive
c) electrically negative
d) a neutral ion
ans. b
3. What other effect of the electric current is also present in the fluorescent lamp and causes losses in the efficiency of the lamp?
a) The chemical effect
b) The magnetic effect
c) The heating effect
d) The chemical and the magnetic effect
ans. b
4. What is the unit of charge ?
a) Volt-ampere VA
b) Henry H
c) Farad F
d) coulomb C
ans. d
5. Static electricity is produced by
a) chemical reaction
b) friction
c) induction
d) both friction and induction
ans. b
6. The sure test of electrification is
a) induction
b) friction
c) repulsion
d) attraction
ans. c
7. The space surrounding a charge body , within which the influence of its charge extends is called
a) coulombs
b) electric field
c) electric intensity
d) lines of force
ans. b
8. Paper condenser is a type of
a) variable condenser
b) electrolytic condenser
c) fixed condenser
d) none of these
ans. c
9. Mica or ceramic condenser is a type of
a) variable condenser
b) electrolytic condenser
c) fixed condenser
d) none of these
ans. c
10. With the rise of temperature, dielectric strength of the material
a) increases
b) remains constant
c) decreases
d) becomes zero
ans. c
