Page 32 - E-Science Prim.6 2024-2025 U1 Con.2,3_Handy

Galvanometer: a device

used to detect the flow of
small electric currents.

A scientist made an experiment as shown:

1- When the magnet was at rest away from the coil:
The needle of galvanometer didn’t move
= No electric current

2- When the magnet was moved to and into the cylinder:
The needle of galvanometer moved to one side
= Electric current flow

3- When the magnet was moved rapidly back and forth inside:
The needle of galvanometer moved rapidly

= Movement of magnet increases, the generated electric current increases

Also, by increasing the number of loops in the coil, the electric current

will increase.

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First Term