Question

what is the need of cleaning both ends of the connecting wires with sandpaper before using them in experiment

Answer 1

Both end of the connecting wires should be cleaned with sandpaper before using them in experiments because the contamination can get mixed into the solution of electrolyte, which will conduct heat or temporary electricity during sanding.

The wires should be cleaned well in advance and last-minute cleaning should be avoided as much as possible.

Answer 2

Answer:

There is a need of cleaning both ends of wire with sandpaper before using in the experiment because why are such as copper aluminium get oxidised with oxygen and forms a thick layer.

This causes for heating of wire and the circuit make it damaged.

Rubbing with sandpaper makes the wires clean and let the current to move easily.

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