How can a campass needle be used as a tester?
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I think so it can be by .....as where the holder of the pencil is put....put the tube one the place of the pencil...
I think so it will help you.!
I think so it will help you.!
Answered by
1
a compass needle can be used as a tester because it shows deflection for showing the presence of current. However , a regulator tester is much more reliable when used.
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