Question

Q) A tester is used to test the conductivity
of three liquids namely A, B and C. It is seen
that the bulb glows dimly when tested with
liquid A, it glows brightly when tested with
liquid B and does not glow at all when
tested with liquid C. Which of the following
is a correct conclusion of this experiment? *​

Answer 1

Answer:

c

Explanation:

The energy from the current is not enough for exciting the electron from valence band to conducting band

∴ Liquid C is the poorest conductor of electricity among the three liquids