Give the procedure to experiment the heating effect of electric current.
Answer variants:
Keep one pin on the tip of the arrow and another pin
about \(1\) \(mm\) away
about \(1\) \(mm\) away
Place the arrow-shaped foil on a wooden board
Connect a thin pin to the wires of a certain length
Make sure that the head of the arrow is pointed
Cut an aluminium foil in the shape of an arrow
Join the wires to the terminals of the \(9\ V\) cell
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