In many of the activities, we have used a tester made up of LED. Can weavoid LED and use something else as a tester?

In many of the activities, we have used a tester made up of LED. Can w

1.	In many of the activities, we have used a tester made up of LED. Can weavoid LED and use something else as a tester?
Answer» Explanation:YES, one can avoid the LED and use an alternative as a tester. Magnetic compass needle can be USED as an alternative tester. A magnetic compass is the most FREQUENT instrument used to determine the direction. Magnetic compass can be used when -a. If the magnetic needle is kept near a wire CONDUCTING electricity, then the magnetic compass shows deflection.b. Even if a weak current flows across the wires, then also the compass shows a deflection.

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In many of the activities, we have used a tester made up of LED. Can weavoid LED and use something else as a tester?

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