Which of these is observed when air is pumped out of a di...
Which of these is observed when air is pumped out of a discharge tube without lowering its pressure
the conductivity of the air increases
the conductivity of the air decreases
conduction does not occur
spark are produced
Correct answer is C
Conduction takes places in gases when air is pumped out of a discharged tube under reduced pressure.
Two identical cups containing the same volume of water at 45°C and 5°C, are left in a room a...
Calculate the inductive reactance of the circuit shown above. ...
When an atom loses or gains a charge, it becomes ...
Nuclear fusion is not used as a source of enegy because ...
What is the effect of using split-rings in a simple d.c motor? ...
Which of the following objects is not a conductor of electricity? ...