Questions on Energy Transitions
Q9. Jacquie has a mobile phone. Energy is stored in the battery of the phone. The drawing shows the battery being charged.
![](PIC9a.png)
(a) Which energy transfer takes place in the battery as it is being charged?
A |
chemical to sound |
B |
sound to thermal |
C |
electrical to chemical |
D |
thermal to electrical |
1 mark
(b) When the battery is fully charged, Jacquie unplugs the phone. Which energy transfers take place when the mobile phone rings?
![](PIC9.png)
A |
chemical to electrical to sound |
B |
electrical to chemical to sound |
C |
kinetic to electrical to sound |
D |
thermal to electrical to sound |
1 mark
Total 2 marks