Page 34 - Summary 6 2025
P. 34
Delta Modern Language Schools
Science department
Grade 6
1st term 2024- 2025
Galvanometer:
It is a device used to detect the flow of small electric current.
What happened if…?
1-When a magnet was placed at rest away from the coil?
The needle of galvanometer didn't move which
indicates there was no electric current.
2-When a magnet was moved toward the coil.
The needle of galvanometer moved to one side
which indicates that there was an electric current.
3-When a magnet moved rapidly back and forth inside?
The needle of galvanometer moved rapidly.
• When the movement of magnet increases, the generated electric current
increases.
• When the number of loops in the coil increases, the movement of the
galvanometer increases, as the amount of generated electric current will
increase.
Pacemaker
• The heart is a muscle that beats consistently for the duration of our lives.
• The heart has a natural pacemaker which creates electric currents causing
the heart to contract.
• When the natural pacemaker starts to fail, sometimes we need an artificial
pacemaker to keep the heart beating correctly.
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