Physics
Grade-9
Easy
Question
Which statement is true about both the figures?
- ‘A’ shows thermocouple effect and ‘B’ shows friction to produce electricity
- ‘A’ shows thermocouple effect and ‘B’ shows piezoelectric effect to produce electricity
- ‘A’ shows piezoelectric effect and ‘B’ shows thermocouple effect to produce electricity
- ‘A’ shows friction and ‘B’ shows thermocouple effect to produce electricity
Hint:
The thermoelectric effect/ thermocouple effect refers to the direct conversion of temperature differences to electric voltage via a thermocouple. It is also called- Seebeck effect.
Piezoelectric effect is when compressing a piezoelectric material produces electricity.
The correct answer is: ‘A’ shows thermocouple effect and ‘B’ shows piezoelectric effect to produce electricity
In the given diagrams, 'A' shows thermocouple effect and 'B' shows the piezoelectric effect to generate electricity.
- When one end of a thermocouple is heated, the other is cool.
- The heat flowing from the hot end to the cool end that generates electric charges.
- In the piezoelectric effect, mechanical energy is applied to piezoelectric material to generate electrical energy.
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