Question

In some testers, LEDs are used in place
of bulb. Give reason.​

Answer 1

Answer:

Why do we use led in the tester instead of bulb !!!

'LED' glows even a small current pass through the circuit ,but the bulb doesn't glow . So we use it as a tester.

Answer 2

Answer:

LED (Light Emitting Diodes) can be used in place of the electric bulb in the tester, LED glows even when a weak electric current flows through it. s electric current produces magnetic current, a tester can be prepared by using a compass needle.

Explanation:

hope this helps u