1. An electric charge on a body produces
(a) A magnetic field only
(b) An electric field only
(c) Both electric nor magnetic field
(d) Neither electric nor magnetic field
2. There is no flow of current between two charged bodies when connected because
(a) They have the same quantity of charge
(b) They have the same potential
(c) They have the same capacity
(d) They have the same ratio of potential per unit charge
3. I vote equals
(a) 1 joule
(b) 1 joule per coulomb
(c) 1 coulomb per metre
(d) 1 newton per coulomb
4. The resistance of germanium ----- with rise in temperature
(a) Increases
(b) Decreases
(c) Remains the same
(d) first increases then decreases
5. The resistance of carbon ---------with rise the temperature
(a) Increases
(b) Decreases
(c) Remains the same
(d) First increases then decreases
6. Good conductors have many loosely bound
(a) Atoms
(b) Protons
(c) Molecules
(d) electrons
7. What constitutes current in a metal wire?
(a) Electrons
(b) Protons
(c) Atoms
(d) Molecules
8. The fixed resistance is called
(a) Rheostat
(b) Resistor
(c) Key
(d) Switch
9. The device used for measuring potential difference is known as
(a) Potentiometer
(b) Ammeter
(c) Voltmeter
(d) Galvanometer
No comments:
Post a Comment