Question

why LED is used in place of bulb in a tester.
no spams
fast

Answer 1

LED bulbs can detect very weak flow of current

therefore it is used as tester

hope it helps you

mark as brainliest please

Answer 2

led is used in place of bulb in tester because it is small in size , also of low volt , controlled with resistance, and it's light can be observed easily in tester.....