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Current Electricity — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsCurrent Electricity1 Mark
MCQ
Carbon resistors are of two types:
  • ✓
    Composition type resistor and film type resistor.
  • B
    Rheostat and film type resistor.
  • C
    Rheostat and variable resistor.
  • D
    Composition type resistor and rheostat.
✓

Answer

Correct option: A.
Composition type resistor and film type resistor.

Carbon resistors are of two types composition type resistor and film type resistor.
There are a number of different types of fixed resistor:
Carbon composition: These types were once very common, but are now seldom used.
Carbon film: This resistor type is formed by "cracking" a hydrocarbon onto a ceramic former.

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