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primary 6 | Science
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Choea
Choea

primary 6 chevron_right Science chevron_right Singapore

This is a science question but i can't choose science subject

Date Posted: 5 months ago
Views: 48
Goh Guo Lin
Goh Guo Lin
5 months ago
When the iron rod touches the metal contacts, a closed circuit is formed, allowing current to flow throughout the circuit and lighting up the bulb
Phylicia Tong
Phylicia Tong
5 months ago
When the iron rod touches the metal contacts, a closed circuit is formed since iron is a good conductor of electricity, the bulbs light up.

When the electric current passed through the steel bar, it becomes magnetized and attracts the iron rod, hence the iron rod moved towards the steel bar.
Phylicia Tong
Phylicia Tong
5 months ago
On a side note... When the iron rod touches e metal contacts, a closed circuit is formed, the steel bar becomes magnetized n attracts the iron rod. The circuit thus becomes broken ie e steel bar loses its magnetism and e iron rod falls to make contact with the metal contacts thus making a closed circuit and causing the steel bar to be magnetized to attract the iron rod n breaking the circuit.. So it just go on in a loop. Can understand?

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Choea
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Sha
Sha
5 months ago
Take a clear pic pls