Which of the following is not correctly matched?
- AVoltmeter - Potential difference
- BAmmeter - Electric current
- CPotentiometer - Electromotive force
- DGalvanometer - Electric resistance
- ENone of the above/More than one of the above
Show answer and explanation
Correct answer: (d) Galvanometer - Electric resistance
Explanation
A galvanometer detects and measures small electric current, not resistance.
The correct pairs are Voltmeter–potential difference, Ammeter–electric current and Potentiometer–EMF.
So 'Galvanometer–electric resistance' is the wrongly matched pair.