Flashlight or smoke detector have simple dry cell or batteries.
The cell are generally of 6 volts.
In these cells Zn acts as anode and graphite electrode acts as cathode.
A mixture of MnO2 and carbon blacks surrounds the graphite cathode
The electrolyte is ZnCl2 and ammonium chloride. This mixture is used as thick paste.
Answer:The best electric cells for a flashlight is the rechargeable alkaline battery and the 9v rechargeable lithium batteries in smoke detector.
Explanation:
