Why ideally the internal resistance of voltmeter should be infinite and of an am

Why ideally the internal resistance of voltmeter should be infinite and of an ammeter be zero

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Why ideally the internal resistance of voltmeter should be infinite and of an ammeter be zero..

Answer / nizam

As we know,ammeter is used for measuring current in a circuit.In order to to this first current has to enter the ammeter.From the well known theory that current always choose low resistance path,in order to measure it accurately,manufacturers put it to zero(0).

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Why ideally the internal resistance of voltmeter should be infinite and of an ammeter be zero..

Answer / prathiba

I think that for an ideal ammeter resistance value is zero.
From ohms law ,V=IR=>I=VR.since R=0,so current is infinity.
Similarly for ideal voltmeter their is no voltage drop across it,so voltage is zero.

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