Which of the following devices helps to maintain a potential difference across a conductor?
In Force equation, F is equal to
Sound CANNOT travel through
Mechanical energy is the sum of
The unit of power used in industry is
The capacity to do work is called
To hear a distinct echo the time interval between the original sound and the reflected sound must be at least
If the Distance-Time graph is a curve then it represents _______________.
What is the heat released by a heating filament rated 20 W when it is kept on for 2 seconds?
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