A lamp is rated 240V 60W, calculate the resistance of its...
A lamp is rated 240V 60W, calculate the resistance of its filament
240Ω
360Ω
960Ω
1440Ω
Correct answer is C
R = V2P=240260=960Ω
Which of the following correctly explains why soft iron is prefered to steel in electromagnets? i...
Which of the following will reduce the frequency of oscillation of a simple pendulum?...
The carbon-granules microphone works on the principle of change in ...
The lens illustrated above can best be described as a ...
Which of the units of the following physical quantities are derived? I. Area II. Thrust III. Pr...
Which of the following statements correctly defines a simple machine? a device ...
A calibrated potentiometer is used to measure the e.m.f. of a cell because the ...