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Electric Current and its Effects — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceElectric Current and its Effects1 Mark
MCQ
Which pair is not correct for the instruments used in the laboratory and their uses from the following?
  • A
    Voltmeter $-$ To measure the electric potential differene.
  • B
    Ammeter $-$ To measure the electric current.
  • C
    Galvanometer $-$ To detect the presence of current.
  • ✓
    Resistor $-$ To supply the electric energy to circuit.
✓

Answer

Correct option: D.
Resistor $-$ To supply the electric energy to circuit.
A resistor is an instrument which provides a resistance to the flow of current. Electric energy to the circuit is provided by a battery.

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