Question

name a tester which can detect a weak current​

Answer 1

Answer:

Weak electric current flowing through a liquid can also be detected by using a compass. We take out the cardboard tray from the inside of a discarded matchbox and place a small compass inside this cardboard tray. When any magnetic compass detects any electric siginal it starts rotating

Explanation:

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Answer 2

LED and compass are used for detect weak electric current.

Explanation:

• Weak current is usual in our daily basis of life. All the electric components have weak current.
• It is detected by the magnetic compass and the LED.

• The magnetic compass will detect the electric siginal by start rotating. It is due to the presence of magnatic effect of the electricity.
• While the LED detects any form of electric current, it will indicate by glowing. Because it has glow with less amount of electrical current.

To know more:

Two devices to detect a weak flow of current

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