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An ideal ammeter has infinite resistance and an ideal voltmeter has zero resistance.

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in Physics – Class 12 by (135k points)
An ideal ammeter has infinite resistance and an ideal voltmeter has zero resistance.

(a) True

(b) False

I have been asked this question during an interview.

My doubt stems from Moving Coil Galvanometer topic in division Moving Charges and Magnetism of Physics – Class 12

1 Answer

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Best answer
Correct choice is (b) False

The explanation: An ammeter is a low resistance instrument and it is always connected in series to the circuit. An ideal ammeter has zero resistance. Voltmeter is a high resistance instrument and it is always connected in parallel with the circuit element across which potential difference is to be measured. An ideal voltmeter has infinite resistance.

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