Physics
The graph of voltage vs current for four different materials is shown below.
Which of these four materials would be used for making the coil of a toaster?
- Q
- S
- P
- R
Related Questions
According to the old convention the color of the earth wire is:
- black
- green
- yellow
- red
Lenz's law is based on the law of conservation of:
- force
- charge
- mass
- energy
Vibrations produced in a body under the influence of the periodic force is;
- forced vibrations
- resonant vibrations
- damped vibrations
- sympathetic vibrations
Two sound waves X and Y have same amplitude and same wave pattern, but their frequencies are 60 Hz and 120 Hz respectively, then:
- X will be shriller and Y will be grave
- X will be grave and Y will be shriller
- X will differ in quality than Y
- X is louder than Y.