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The resistance of an ideal voltmeter is __________

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The resistance of an ideal voltmeter is __________

(a) low

(b) infinite

(c) zero

(d) high

I have been asked this question during an interview for a job.

My doubt is from The Rectifier Voltmeter topic in chapter Application of Diodes of Electronic Devices & Circuits

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The correct answer is (b) infinite

The explanation is: The internal resistance of an ideal voltmeter is infinity and the internal resistance of an ideal ammeter is zero. Ammeter is connected in series and voltmeter is connected in parallel with the electric appliance. The resistance of an idea voltmeter is infinite so that it draws no current from the circuit under test.

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