Question

* Exam 20
S
u e indicative of the level and
l be asked in ANTHE-2019)
N-A: SCIENCE
rect 1 4.
Which of the following can be used in a tester along
with a battery to detect a weak current in the circuit?
(1) 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
The characteristics of sound because of which voice​

Answer 1

Answer:

4

Explanation:

coz led would glow or compass would show deflection

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