how will you detect the presence of weak electric current in a solution??
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how will you detect the presence of weak electric current in a solution??
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we can detect the presence of weak current in a solution by 2 ways
Lead pieces are attached to an LED.
One lead is longer than the other leads.
While connecting LED in the circuit, the long head is
connected to the positive terminal of the battery in all cases.
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.
hope this answer was helpful :)