Physics
If the length l of wire is increased to 3l by stretching, its resistance R increases to ……………
- 3R
- 4R
- 6R
- 9R
Related Questions
Out of the following, non-ohmic resistor is :
- nichrome
- copper sulphate solution with copper electrodes and dil sulphuric acid.
- solar cell
- silver
The resistance of a conductor depends on :
- the temperature of the conductor
- the thickness of the conductor
- the length of the conductor
- all of the above
Which of the following is an ohmic resistor?
- LED
- junction diode
- filament of a bulb
- nichrome wire
For which of the following substances, resistance decreases with increase in temperature?
- copper
- mercury
- carbon
- platinum