Topic: Electronic Devices and Circuits
Which of the following meters is based on the principle of Hall Effect?
- A. Ammeter
- B. Gaussmeter
- C. Voltmeter
- D. All of the above
Answer: B. Gaussmeter
Explanation: A Gaussmeter measures magnetic field strength and is fundamentally based on the principle of the Hall effect. Voltmeters and ammeters typically work on electromagnetic or electrostatic principles.