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Question
Find the odd one out and give its explanation.
Options
Voltmeter
Ammeter
Galvanometer
Electric motor
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Solution
Electric motor.
Explanation:
- A voltmeter, ammeter, and galvanometer are all measuring instruments used to detect or measure electrical quantities (potential difference, current, and the presence of small currents, respectively).
- An electric motor is an electromechanical device that converts electrical energy into mechanical energy, rather than functioning as a measuring instrument.
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