Question

Electronic voltmeters can be designed to measure ____________

(a) Only very small voltages

(b) Only very high voltages

(c) Both very small and very high voltages

(d) Neither high nor small voltages

The question was posed to me during a job interview.

The query is from The Rectifier Voltmeter in division Application of Diodes of Electronic Devices & Circuits

Answer 1

Right option is (c) Both very small and very high voltages

The explanation is: A voltmeter is an instrument that measures the difference in electrical potential between two points in an electric circuit. An analog voltmeter moves a pointer across a scale in proportion to the circuit’s voltage; a digital voltmeter provides a numerical display. Thus it is suitable for measuring both small and high voltages.