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Electric Current in Conductors — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsElectric Current in Conductors1 Mark
MCQ
Which of the following quantities do not change when a resistor connected to a battery is heated due to the current?
  • A
    Drift speed.
  • B
    Resistivity.
  • C
    Resistance.
  • ✓
    Number of free electrons.
✓

Answer

Correct option: D.
Number of free electrons.
When a resistor connected to a battery is heated due to the current that causes drift speed, resistivity & resistance may e change But number of free electrons remains same.

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