Question

علي غسان اتصالات اسيا:
1. The source in the circuit provides the circuit with electromotive force. *

Current moves from a point of high potential energy to a point of low potential

Inert gas white, glowing, or luminous with intense heat

4. Electronic equipment and transformers may also use a special electrical grade of paper. *

5. In solutions and gases, the electric current is carried by the movements of electrons. *

6. Absolute zero is the lowest temperature theoretically possible, characterized by complete absence of heat (thermal energy). *

7. A material which does not easily release electrons is called conductors. *

8. A piece of magnesium has potential energy stored in chemical form that is expended in the form of heat and light. *

9. The kinetic mechanical energy of the moving rotor of a dynamo is changed into kinetic electrical energy by electromagnetic induction. *

10. The filament of a light bulb emits intense light when heated by a current *

11. The color of the light will vary according to the resistance. *

12. Silver is an insulator. *

13. The metal chassis of many electrical devices are used to conduct current. *

14. A non-metal which conducts well is carbon. *
false or true

Answer 1

1) True, the souce creates a potential difference by producing a electromotive force to drive the elctrons from negative to positve terminal.

2) True, electrons move from negative potential to postive. Current which flows in the opposite direction flows from positive potential to negative potential.

3) False, inert gas does not react with the environment hence will not burn to form white and glowing light.

4) True, Electric insulation paper acts as a excellent insulator due to its cellulose content. Hence, are used in transformers and electronic equipments.

5) True, In all transmission medium of gases, liquids and solids movements of electrons propels electric current.

6) True, Absolute zero is the lowest temperature theoretically possible.

7) False, conductor is a material which has lots of valence electrons and can release electron easily.

8) True, during combustion of any metals the potential energy stored in chemical form is transformed as heat energy.

9) True, a dynamo is equivalent to a generator. Converts mechanical energy into electrical energy.

10)True, the filament of an incandicent bulb transfers electrical energy to light energy in form of light. hence, emits light when current flows through it.

11) True, this theory can be explained by black body radiation.

12) False, Silver is a conductor

13) False, metal chassis of electic car is used to offer protection and rigity to the car and not for conduction.

14) True, alotropes of carbon (graphite) are good conductors of electricity.