The carbon-granules microphone works on the principle of ...
The carbon-granules microphone works on the principle of change in
inductance
resistance
capacitance
voltage
Correct answer is B
No explanation has been provided for this answer.
Which of the following factors decreases the rate of evaporation of a liquid? ...
In which of the following device is the expansion of solid not required? I. Simple pendulum ...
The resultant of two forces 12N and 5N is 13N. What is the angle between the two forces? ...
A lamp is rated 240V 60W, calculate the resistance of its filament ...
The electric potential at point P in the diagram above can be expressed as ...