Which of the following instrument is most accurately for ...
Which of the following instrument is most accurately for comparing electromotive force (e.m.f) of two cells?
Voltmeter
Meter rule
Galvanometer
Potentiometer
Correct answer is D
Voltmeter: an instrument for measuring electric potential in volts
Galvanometer: it is a device used to indicate direction of a small electric current
Potentiometer: is a device for measuring or comparing e.m.fs of cells
Meter rule: measuring a distance at different points
All the heat generated by a current of 2A passing through a resistor of 6Ω for 2.5s is used to...
Which of the following statements about sound wave is not correct? Sound waves can be ...
The phase difference between waves P and q in the diagram above is ...
Using venier calipers, which of the following readings gives the correct measurement for the le...
Which of the following statements is true of the diagram shown above? ...
For a short sighted person, light rays from a point on a very distant object is focused ...