Which of the following can be used in a tester along
with a battery to detect a weak current in the circuit?
A LED only
(2) A coil wounded over a compass needle only
(3) Bulb of 100 W only
(4) Either LED or a coil wounded over a compass
needle
Answers
Answered by
3
Answer:
4
Explanation:
either led or a coil wounded over a compass needle (4)
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