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Electric Current and its Effects — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceElectric Current and its Effects1 Mark
MCQ
What does this symbol mean in electric circuits?
  • ✓
    Rheostat
  • B
    Battery
  • C
    Capacitor
  • D
    Inductance
✓

Answer

Correct option: A.
Rheostat
Rheostat is a variable resistor, which is used to control the flow of electric current by manually increasing or decreasing the resistance.
The arrow sign indicates the variability.

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