 |
lamp |
| electrical energy →
_____________+ _____________
|
 |
rice cooker |
| _____________→ ___________ |
 |
Computer |
| ___________ →
___________ +_______________ |
 |
Hair dryer |
| _____________ →
_____________+_______________ |
 |
Calculator |
| Solar energy →
_____________→_______________
|
 |
Solar powered signal light |
| _____________ →
______________→______________
|
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