MCQ
Q.
Which device can convert electric energy in to heat energy?
Correct Answer: A
The correct answer is Electric Heater.
Key Points
- Electric Heater is a device that can convert Electric energy into heat energy.
- In an electron tube, an electric heating element shaped in the form of a wire or ribbon is used to supply heat to a cathode; the element provides heat when a current is passed through it.
- Electric heaters also are used for domestic central heating and for materials processing in the industry for example heat pumps; electric furnace.
Additional Information
- Energy is the ability to do work.
- The Law of conservation of energy:
- Energy can neither be created nor be destroyed, only Energy can be converted from one form to another.
- These are some parts of the energy that convert one form to another:
- Heat
- Light
- Motion
- Electrical
- Chemical
- Gravitational
| Device | Energy convert |
| Dynamo | Mechanical Energy into electrical energy |
| Electric Bulb | Electric energy into light energy |
| Loud Speaker | Electric energy into Sound energy |
Important Points
| Devices | Used to |
| Transformer | Up's and Down of AC voltage level |
| Rectifier | Convert Alternating current into Direct current |
| Microphone | Convert Sound energy into Electrical energy |
| Photochemical cell | Convert Chemical Energy into Electrical energy |
